Conclusions that can be made about the animals of each class based on the structural similarities of embryos include the presence of an evolutionary link among the classes and that they may share homologous structures. It is incorrect to conclude a direct lineage such as reptiles giving birth to fish and amphibians from embryology alone.
Explanation:Based on the structural similarities of embryos, multiple conclusions can be made about the animals of each class:
There is an evolutionary link among the classes, implying that animals with similar embryonic stages may have diverged from a common ancestor. This is evidenced by shared embryonic features such as gill slits and tail structures, which may disappear in adulthood but indicate a common lineage.The adults of each class may share structural similarities due to their embryological development, suggesting that these shared features are homologous structures inherited from a common ancestor.It is incorrect to conclude that Reptiles must have given rise to fish and amphibians based on embryology alone since the linear progression of species is not how evolution operates. Instead, these groups share common ancestors and have evolved separately.Embryonic similarities among different classes indicate that animals of each class have homologous structures, which are traits inherited from a common ancestor, reflecting evolutionary relationships rather than strictly analogous structures which serve similar functions but do not indicate common ancestry.The presence of similar embryonic stages across diverse groups of animals highlights the concept of evolution from a common ancestor and provides strong evidence for the relatedness of different classes of animals. By studying embryology, scientists can trace the evolutionary paths that have led to the diversity of life forms we see today.
The correct conclusions based on the structural similarities of the embryos are:
1. There is an evolutionary link among the classes.
2. The adults of each class may share structural similarities.
3. Animals of each class have analogous structures.
Based on the options given, the following judgements about the embryos' structural similarities are accurate:
1. There is a connection between the classes through evolution.
The fact that anatomical similarities in embryos frequently imply shared ancestry and evolutionary links between many animal taxa lends credence to this view.
2. There could be structural commonalities among the adults in each class.
This result is tenable because distinct classes of embryos frequently mature into adults with similar anatomical traits derived from their shared ancestry.
3. The structures of the animals in each class are similar.
Although this conclusion is not proved by the available data, it remains a possibility. When a feature in two or more species has a similar function but evolved separately—often as a result of comparable environmental pressures—rather than through common ancestry, it is referred to as an analogy.
As a result, given the embryos' structural similarities, alternatives 1, 2, and 3 are accurate. The available data does not directly support Option 4.
The glycogen in meat and poultry is a significant source of calories in our diet. question 2 options:
The statement is false.
Meat is mostly the muscle tissue of an animal composed of water (about 75%), protein, and fat. The glycogen (multibranched polysaccharide of glucose) is a sugar stored in muscle (reserve molecule of the muscle) and its breakdown produces enough energy (in a form of ATP) to contract the muscles. It also produces lactic acid. When there is no blood flow (when muscles become meat) to carry the lactic acid away, the acid builds up in the muscle tissue.
"The statement ""The glycogen in meat and poultry is a significant source of calories in our diet"" is false.
Glycogen is a storage form of glucose found in the muscles and liver of animals, including meat and poultry. However, after an animal is slaughtered, the glycogen stores are quickly depleted due to the conversion of glycogen to lactic acid, which is a part of the post-mortem process that affects the tenderness and pH of the meat. Therefore, the amount of glycogen present in cooked meat and poultry is minimal and does not contribute significantly to the caloric intake in a typical human diet. The primary sources of calories in meat and poultry are the proteins and fats they contain.
To summarize:
- Glycogen is present in the muscles of animals before slaughter.
- Post-mortem, glycogen is converted to lactic acid, reducing its presence in the meat.
- The remaining glycogen in cooked meat and poultry is not a significant source of calories.
- Proteins and fats are the main calorie contributors in meat and poultry.
The correct statement reflecting the role of glycogen in meat and poultry in our diet would be: ""The glycogen in meat and poultry is not a significant source of calories in our diet, as it is present in minimal amounts due to post-mortem changes."""
a macromolecule that contains carbon hydrogen oxygen and nitrogen which is used for the body for growth and
Answer:
Proteins.
Explanation:
Biomolecules are the macromolecules and the organic compounds required for the growth of the living organism. Four important biomolecules are carbohydrates, proteins, lipids and proteins.
Proteins are the polymers of the amino acids linked together through the peptide bond. The proteins are made up of carbon, hydrogen, oxygen and nitrogen. Proteins are the main building block of the body and required for the proper growth of the living organism.
Thus, the answer is proteins.
In the freshwater marshes unit, there are several examples of humans now emulating nature.
Some examples of humans now emulating nature are industrial waste water treatment and ecosystem reestablishment.
Freshwater Marsh:
They are non-forested,non-forested, a non-tidal, marsh wetland that contains fresh water, and is continuously or frequently flooded.
Freshwater marshes primarily consist of grasses, and emergent plants.
They are located near a water source, such a big lake or a rives that provide a continuous or frequent supply of water.Humans are emulating the wetland because they are very helpful for reestablishing ecosystem, also used to industrial water treatment.Therefore, some examples of humans now emulating nature are industrial waste water treatment and ecosystem reestablishment.
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During which of these processes is oxygen consumed?
when aerobic bacteria break down dead algae in a pond
when forests are burned to clear land for farming
when plants or animals perform aerobic cellular respiration
when plants perform photosynthesis
you can pick more than one
Final answer:
Oxygen is consumed when aerobic bacteria decompose dead algae, when forests are burned for land clearing, and during aerobic cellular respiration in plants or animals. Photosynthesis, however, produces oxygen and does not consume it.
Explanation:
Oxygen is consumed during several processes which involve aerobic metabolism. The following scenarios outline when oxygen would be utilized:
When aerobic bacteria break down dead algae in a pond, they use oxygen in a process known as aerobic respiration. During this process, the bacteria obtain energy by breaking down organic matter, releasing carbon dioxide and water as by-products.Oxygen is also consumed when forests are burned to clear land for farming. In this case, oxygen reacts with the carbon in wood during combustion, which results in the release of carbon dioxide, water, and energy in the form of heat and light.Plants or animals performing aerobic cellular respiration also use oxygen. This process involves using oxygen to break down glucose molecules to produce ATP, a source of energy, along with carbon dioxide and water as by-products.In contrast, during photosynthesis, plants actually produce oxygen rather than consume it.
1. Most familiar life forms live in regions of biomes that humans inhabit. (1 point)
True
False
2. Biodiversity is the variety of life forms that exist or existed in the past. (1 point)
True
False
3. Changes in an organism can’t occur because of an outside force, such as a massive earthquake. (1 point)
True
False
4. A species is a group of organisms with distinct characteristics that match others in a population. (1 point)
True
False
5. One of the most well-known researchers of living organisms and biodiversity was Charles Darwin. (1 point)
True
False
6. All scientists agreed with Charles Darwin’s findings. (1 point)
True
False
7. Natural Selection is a process by which organisms remain the same over time to maintain consistency. (1 point)
True
False
8. It was thought that there were areas of the Earth where life couldn’t exist, since the temperatures were
not suitable for most animals to survive.
(1 point)
True
false
9. Scientists have found new organisms that have the ability to survive extreme temperatures, great
pressure depths, or highly toxic solutions.
(1 point)
True
False
10. We have always known how vast biodiversity is on Earth. (1 point)
True
False
Answer:
1. The first statement is true. A biome is defined as a large set of naturally occurring plants and animals occupying a major habitat. For e.g. forest, dessert, grasslands etc.
2. The given statement is True. Biodiversity is defined as the variety of plants and animals exists or existed in the world or in any specific habitat. The high level of biodiversity is important and beneficial for the environment.
3. This statement is False. Outside force such as earthquake, zone hole etc can certainly cause changes in the organism. For example, UV rays can cause cancer in an organism, dark colorization of peppered moth during industrial revolution.
4. It is True as species is defined as a group of organisms capable of interbreed and share common characteristics. It is the basic unit of biological classification. For example, sapiens is the species of human being.
5. Yes, the given statement is true. Charles Robert Darwin famous naturalist, biologist, and geologist. He was best known for his work in the field of evolution and gave the theory of natural selection. He is also known as the father of evolution.
6. No, all scientists were not agreed with Charles Darwin, for example, Lamarck, Weismann etc. However, Neo-Darwinism was much more accepted that Darwin original theory. Hence, the given statement is false.
7. Natural selection is one of the process of evolution. It sates that organisms better suited and adapted to their environment have better chances of survival. Organisms acquire new characteristics over the generations in order to adapt in a environment. Hence, the given statement is false.
8. The statement is true. However, recently it has been found that there are some bacteria which can inhabit the extreme conditions. They are known as extremophiles, for example, halophiles, thermophiles etc.
9. Yes the statement is true. These organisms are known as extremophiles, for example, halophiles (which live in high saline conditions), thermophiles (can live in high temperatures) etc.
10. This statement is false as there are many species which have not been discovered yet.
Final answer:
The answers range from acknowledging the existence of life in regions inhabited by humans to recognizing the contributions of Charles Darwin to the field of biodiversity. Changes in an organism can be influenced by external events, and there is ongoing research revealing new organisms capable of surviving extreme conditions.
Explanation:
The answers to the student's questions are as follows:
True. Most familiar life forms live in regions of biomes that humans inhabit.True. Biodiversity is the variety of life forms that exist or existed in the past.False. Changes in an organism can occur because of an outside force, such as a massive earthquake.True. A species is a group of organisms with distinct characteristics that match others in a population.True. One of the most well-known researchers of living organisms and biodiversity was Charles Darwin.False. Not all scientists agreed with Charles Darwin's findings.False. Natural Selection is a process by which organisms adapt and change over time as they respond to environmental pressures.True. It was thought that there were areas of the Earth where life couldn't exist since the temperatures were not suitable for most animals to survive.True. Scientists have found new organisms that can survive extreme temperatures, great pressures, or highly toxic solutions.False. The vastness of biodiversity on Earth continues to be a subject of discovery and research.Diffusion can be defined as __________. Question 5 options: movement through a cell membrane using energy from ATP active transport of particles up a concentration gradient movement of particles from a region of low concentration to a region of high concentration movement of particles from a region of high concentration to a region of low concentration
Diffusion is the movement of particles from a region of high concentration to a region of low concentration. It's a crucial biologic process used in cells for the transportation of substances like oxygen and nutrients, and it doesn't require energy because it operates along the concentration gradient.
Explanation:Diffusion can be defined as the movement of particles from a region of high concentration to a region of low concentration. This is a fundamental concept in the field of biology. It's an essential process that happens within cells and across the cell membranes, facilitating the transport of substances such as oxygen, nutrients, and other molecules. Unlike active transport, which uses ATP as a source of energy to transport molecules against the concentration gradient, diffusion doesn't require any energy because it works along with the concentration gradient.
Diffusion can be defined as the movement of particles from a region of high concentration to a region of low concentration. This process occurs passively and does not require the input of energy. It is driven by the random motion of particles, such as molecules or ions, and helps to equalize the concentration of substances in a system.
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Which of the following would most likely be found in the sands at Myrtle Beach?
A. Placer deposits
B. Magmatic deposits
C. Hydrothermal deposits
D. Residual deposits
The sands at Myrtle Beach would most likely contain Placer deposits. These are concentrations of heavy metallic minerals that accumulate in places like stream beds or beach sands through the action of water. Other types of deposits, such as Magmatic, Hydrothermal, and Residual, form under different conditions and are less likely to be found in beach sands.
Explanation:The answer is A. Placer deposits. Placer deposits refer to concentrations of heavy metallic minerals that form in rivers and streams; due to the action of water, they are typically found in the modern or ancient stream beds or beach sands. Myrtle Beach is a popular tourist destination on South Carolina's Atlantic coastline; therefore, any deposits in its sands would most likely be Placer deposits. The minerals are transported by the water and then accumulate somewhere different than their original site. In contrast, Magmatic deposits develop from magma, Hydrothermal deposits form where hot, mineral-rich water emerges from the earth's crust, and Residual deposits are those that remain after the most reactive minerals have been weathered away.
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Which of the following can reduce the amount of energy needed for a chemical reaction to take place?
A. reactant
B. product
C. catalyst
D. hydrogen bond
Your best answer is C. catalyst can reduce the amount of energy needed for a chemical reaction to take place.
Glad to help ya!! :)
The nervous system is the major ______ system of the body.
A. output
B. transport
C. control
D. protective
C. control system of the body. Hope this helps.
Final answer:
The nervous system is the major control system of the body, consisting of the central and peripheral nervous systems, and coordinates voluntary and involuntary actions through electrical signals.
Explanation:
The Major System of the Body Represented by the Nervous System
The nervous system is the major control system of the body. This intricate network, which includes the central nervous system (CNS) consisting of the brain and spinal cord, and the peripheral nervous system (PNS) connecting the CNS to the rest of the body, coordinates all of the body's voluntary and involuntary actions by transmitting electrical signals to and from different parts of the body. It allows rapid responses to stimuli, processes sensory information, and sends signals to muscles, organs, or glands to trigger responses.
For example, when a child unexpectedly crosses the path of a bicycle, the cyclist's nervous system quickly processes this information, leading to immediate actions such as braking or maneuvering away from the child. Similarly, the parts of the nervous system like the somatic nervous system control voluntary movements such as walking, while the autonomic nervous system, specifically the parasympathetic division, regulates involuntary functions such as digestion.
Which is produced by the endocrine system to control how cells and organs function?
glands
hormones
information
stimuli
hormons. hormones are released from glands and they all belong to the endocrine system.
Option B- Hormones are produced by the endocrine system to control how cells and organs function.
The endocrine system consists of glands that produce hormones to regulate the activity of cells or organs. These hormones regulate the body's overall growth, its metabolism and sexual development and function.
How does a loss in crop biodiversity affect agriculture?
A.
It reduces the number of pests in a field.
B.
It reduces a crop’s ability to develop disease resistance.
C.
It increases a crop’s ability to develop disease resistance.
D.
It improves the soil’s nutrient content.
A loss in crop biodiversity affect agriculture that reduces the number of pests in a field. thus option A is correct.
How does the loss of biodiversity affect crop diversity?
Crop plants are derived from wild plants, and plant breeders frequently introduce genes from wild cousins into crop kinds to give desirable traits to the crops. This genetic variety would be lost if wild species were to become extinct.
Plants and animals are more vulnerable to pests and illnesses when there is less biodiversity, so there is option A is correct. Food security and nutrition are jeopardized by the rising loss of biodiversity for food and agriculture, which is exacerbated by our reliance on fewer and fewer species to support ourselves.
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Final answer:
A loss in crop biodiversity affects agriculture as B. It reduces a crop’s ability to develop disease resistance, making crops more susceptible to pests and diseases which could lead to agricultural crises.
Explanation:
The loss in crop biodiversity significantly affects agriculture, particularly in the aspect of disease resistance. A decrease in crop biodiversity can lead to reduced resistance to diseases. This is because having a wide range of genetic traits within crop populations offers a form of protection; when one variety is susceptible to a specific disease, others may be resistant. Consequently, the ability to develop new crop varieties is contingent on maintaining a diverse pool of genetic resources, including wild species that can be bred with cultivated varieties to introduce desirable traits such as disease resistance. Seed companies play a crucial role as they provide the majority of the crop varieties for developed countries and must continue breeding new varieties to keep pace with evolving pests. However, they have also contributed to this issue by focusing on marketing fewer varieties globally, thus decreasing biodiversity.
Furthermore, a lack of biodiversity could lead to a reliance on a smaller variety of crops, which are more vulnerable to pests and diseases potentially leading to agricultural crises or the need for increased pesticide use. Therefore, the correct answer to the question, 'How does a loss in crop biodiversity affect agriculture?' is B. It reduces a crop's ability to develop disease resistance.
An example of the predator/prey dynamic is the rise and fall of the population of Canadian lynx and its favorite prey the snowshoe hare. The two populations were estimated each year for 75 years from the number of animals caught by fur traders. The hare population was found to rise and fall in a ten-year cycle, with that of the lynx following two years later. How does this predator/prey relationship affect the health of a population?
Heat stroke hypothermia
A predator pray is a relationship between two species in which one harms other.
Predator are dependent on prey.
As Canadian lynx eats snowshoe hare and hare population was found to rise and fall in a ten-year cycle, with that of the lynx following two years later.
Explanation:This can be explained in this way, if the food of a specie decrease, after some time that specie will also decrease and if the food of a specie increase after some times, their population will also increases.As the hare decreases, the food for hare will be less in first year they will consume normally eating remaining hare but next year they will start competition each other for food. And their population will decrease due to lack of food and competition.And when hare increases the number lynx start increasing due to favorable eating condition.
Atrazine is an herbicide that prevents plant growth by inhibiting photosynthesis. Atrazine works by binding to proteins in the electron transport chain of photosystem II. Once atrazine binds to the proteins, electrons can no longer travel down the chain to reach photosystem I. Based on this information, how does atrazine stop plant growth?
This electron transport chain of photosystem II helps the chlorophyll molecules in the plant leaves to tap the energy in the light photons. This energy is used to split a water molecule into hydrogen and oxygen atoms. The hydrogen is used to reduced carbon dioxide to make carbohydrates. Therefore, Atrazine stops photosynthesis by inhibiting the capacity of the plant to harness energy from sunlight for photosynthesis.
Answer: C
Explanation:
A.
It prevents the formation of NADH and FADH2, which are needed by the light-independent reactions to fix carbon.
B.
It prevents chlorophyll from creating electrons, which are needed by the light-dependent reactions to make sugars.
C.
It prevents the formation of ATP and NADPH, which are needed by the light-independent reactions to make sugars.
D.
It prevents water from releasing oxygen, which is needed by the light-dependent reactions to fix carbon.
Which of the following is not considered a natural carbon reservoir?
A
aquifer
B
atmosphere
C
fossil fuel deposits
D
terrestrial biomass
An aquifer is not considered a natural carbon reservoir. Conversely, the atmosphere, fossil fuel deposits, and terrestrial biomass are key compartments where carbon is stored and participate actively in the carbon cycle.
Explanation:The natural carbon reservoirs are components of the environment that store carbon and participate in the carbon cycle. Among the options provided, the aquifer is not considered a natural carbon reservoir. While aquifers can contain carbon in the form of dissolved inorganic carbon or organic material, they are not typically listed as significant reservoirs in the global carbon cycle. In contrast, the atmosphere, fossil fuel deposits, and terrestrial biomass are all key compartments where carbon is stored on Earth. These compartments partake in the transfer and transformation of carbon, hence playing a crucial role in the carbon cycle.
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Aquifer is not considered a natural carbon reservoir while atmosphere, fossil fuel deposits, and terrestrial biomass are recognized carbon reservoirs. The correct option is A.
Among the options provided, Aquifer (A) is not considered a natural carbon reservoir. Carbon reservoirs are places where carbon is stored for short or long periods of time. The other options listed - Atmosphere (B), Fossil Fuel Deposits (C), and Terrestrial Biomass (D) - are all well-recognized natural carbon reservoirs. The atmosphere contains carbon in the form of carbon dioxide. Fossil fuel deposits contain carbon that has been stored over millions of years from the remains of ancient life forms. Terrestrial biomass, composed of all the living plants and animals on land, also stores carbon, particularly through the process of photosynthesis in plants.
6. The figure below shows that the original source of energy for all organisms in an ocean food chain is the _____________________.
7. Muscle cells, which need a lot of ATP, would be expected to have a lot of ________________, the organelles involved in cellular respiration.
8. During _________________ reproduction, cells can produce genetically identical offspring, whereas during ________________ reproduction, cells produce genetically different offspring.
6. The Sun is the prime source of energy for the species in the oceanic food chain. The producers in the oceanic food chain, that is, phytoplankton uses the energy from the sunlight to produce the organic matter from water and carbon dioxide. This develops the starting of the flow of energy via the food chain.
7. Mitochondria the powerhouse of the cells are the organelles involved in the process of cellular respiration. Thus, the muscle cells that require lots of energy would have a lot of mitochondria.
8. During asexual reproduction, cells can produce genetically identical offspring, whereas, during sexual reproduction, cells can produce genetically different offspring.
All models have limitations
Answer:
true
Explanation:
because i took my test
Which of the following is NOT an example of physical evidence?
testimony of the neighbor next door
a knife near the accident scene
fingerprints on the window
footprints in the grass near the victim
I believe is
testimony of the neighbor next door
Answer: Option A
Explanation:
Physical evidence can be defined as the objects that is found in the crime scene. These evidences can be fingerprints, hand prints, footprints, cut marks, tool marks, objects such as knifes, et cetera.
The physical evidences can be used to find the find the criminal by matching the prints found the objects.
A testimony of the neighbor next door cannot be considered as the physical evidence of the crime scene.
Hence, the correct answer is option A
Jordon, a leukemia patient, can be treated using (Smooth Muscle Cell, Human Stem Cells, Mature Bone Cells) because these cells have the capacity to (Attack and Destroy Cancer Cells,Cuase Cancer Cells to Differentiate,Produce Healty cells)
Leukemia can be treated using human stem cells to attack and destroy cancer cells.
Answer:
Human stem cells - to produce healthy cells
Explanation:
Stem cell treatment is considered to be the most effective in combating leukemia.
The treatment is with cord cells, as these stem cells are younger, while those found in the cord are the same age as the patient.
After chemotherapy, which destroys cancer cells, stem cells are inserted to generate new cells and replace those that were affected by leukemia.
Which two types of particles are present in equal numbers in an atom, but not in an ion? A. protons and electrons B. protons and neutrons C. inner-shell electrons and outer-shell electrons D. protons and inner-shell electrons
An atom consists of a central nucleus with contains positively charged particles called protons and uncharged particles called neutrons. Negatively charged particles called electrons revolve around the central nucleus along specific orbitals. In a neutral atom, the number of positive protons and negative electrons is same. A metal atom has the tendency to lose electrons from its outermost electronic shell (orbital) to form a positive ion (cation). As a result, the number of electrons decreases. On the other hand, a non-metal atom has the tendency to gain electrons to form a negative ion (anion). As a result, the number of electrons increases. Therefore, electrons and protons are the two types of particles that are present in equal numbers in an atom but not in an ion.
(Answer) (A) protons and electrons
The correct answer is option A which is protons and electrons.
Explanation:An neutral atom contains equal amount of electron and protons.As electrons have negative charge and protons have positive charge and neutrons, third particles in atom are neutral.Since in ions, the number of electron and proton is not equal, thus giving a positive or negative charge.When teaching the mother of an infant diagnosed with congenital hypothyroidism about daily oral levothyroxine sodium therapy, which sign and symptom should the nurse include as possibly indicating an overdose?
Levothyroxine sodium is used in the treatment of hypothyroidism, that is, an underactive thyroid. It provides substitutes more thyroid hormone that is usually generated by the thyroid gland. The medication can also be used in the treatment of other kinds of thyroid ailments like thyroid cancer and goiters.
However, the overdose of the drug can also exhibit some kinds of complications in the patient. Some of the signs that suggest an overdose of levothyroxine sodium are insomnia, sweating, dyspnea, rapid pulse, weight loss, and fever.
Answer:
Insomnia, palpitations, tachycardi, sweating, nervousness, cramps and muscle weakness.
Explanation:
Levothyroxine sodium is a medicine composed of a hormone normally made by the body by the thyroid gland. This drug is prescribed for patients who have a deficiency of this hormone in the body, who are suffering from hypothyroidism. It is important for a doctor to indicate this medicine as a treat and for the patient to follow the instructions for use, avoiding overuse and overdosing. The possible symptoms of overdose that this medicine may cause are: insomnia, palpitations, tachycardi, sweating, nervousness, cramps and muscle weakness.
To reproduce, female elephants produce eggs and male elephants produce sperm. Offspring are produced by the fusion of an egg with a sperm cell. Which statement is true about the offspring? A. The offspring are genetically distinct from the parents because the egg and sperm are both diploid. B. The offspring are genetically identical to the parents because they are produced by sexual reproduction. C. The offspring are genetically distinct from the parents because they are produced by sexual reproduction. D. The offspring are genetically identical to the parents because the egg and sperm are both diploid.
The right answer is C. The offspring are genetically distinct ... by sexual reproduction.
Sexual reproduction, as opposed to asexual reproduction, indicates that the propagation of a species involves male and female gametes. It is the main method of reproduction of multicellular organisms.
In the first stage of sexual reproduction, meiosis, the number of chromosomes is reduced from a diploid number (2n) to a haploid number (n). During fertilization ("fertilization"), haploid gametes come together to form a diploid zygote and restore the initial number of chromosomes (2n).
Answer: C. The offspring are genetically distinct from the parents because they are produced by sexual reproduction.
Explanation: Sexual reproduction occurs through the fusion between an egg and a sperm cell. Each of these cells has a single set of chromosomes and thus are haploid. As a result, the offspring will be a diploid organism with half of its genetic material coming from the mother and half from the father.
Because the offspring is a combination of the parental genetic information, its own genetic setup will be thus unique compared with that of each parent.
The type of reproduction in which the offspring is identical to the parent is called asexual reproduction. Here, one organism produces a genetic copy of itself, without exchanging genetic information with another organism through sex.
too function a unicellular arganism must do what?
A - Get energy, maintain health, and reproduce
b - reproduce and stay healthy
c - maintain health
d- select a habitat, maintain health, and reproduce
It has been proposed that mitochondria and chloroplast are modern descents of early prokaryotic cell that begin to reside and gradually evolve within primitive cells. Which statement supports this view? A. mitochondria and chloroplasts both have prokaryotic ribosomes. B. mitochondria and chloroplasts cannot conduct protein synthesis. C. prokaryotic cells, mitochondria, and chloroplasts are a void of any DNA. D. mitochondria and chloroplasts are found in all modern prokaryotic cells.
The correct answer is option A, that is, mitochondria and chloroplasts both have prokaryotic ribosomes.
Both the chloroplasts and mitochondria are the contemporary progenies of the initial prokaryotic cells. They have vested within the primitive cells, and then have developed with them as a component of them. The hypothesis is encouraged by the fact that both the chloroplasts and mitochondria comprise their own primitive ribosomes, that is, both these organelles exhibits 70s ribosomes.
The correct answer is the option A which is mitochondria and chloroplasts both have prokaryotic ribosomes.
Explanation:Chloroplast and mitochondria are considered as bacteria which after evolution due to the process of endosymbiosis become the part of eukaryote.
A prokaryotic cell contains:
An enclosed double membrane, Circular DNABacteria-like ribosomes.And mitochondria and chloroplast also contain all above.
Hence option A is correct one that is they both contains prokaryotic ribosomes.
Compared with the peak wavelength given off by the Sun, what is the peak wavelength given off by a hotter star?
Answer:
Option A
Explanation:
The peak wavelength of a star can be found using Wien's displacement law:
where
b is the Wien's displacement constant
T is the surface temperature of the star
We can see that the peak wavelength is inversely proportional to the temperature: so, a star which is hotter then the sun will have shorter a wavelength.
Which of the following is an example of an advance in DNA technology that
has directly affected human health?
A. Cross-species transplantation
B. Cloning sheep
C. DNA fingerprinting
D. Production of insulin by bacteria
Answer:
Option d) Production of insulin by bacteria
Explanation:
We are given four reasons and asked to find out an example of an advance in DNA technology that has directly affected human health.
Option a) Cross-species transplantation is incorrect as this does not affect human health at all.
Option b) Cloning sheep is irrelevant to human health and hence incorrect.
Option C. DNA fingerprinting is irrelevant.
Option D.Production of insulin by bacteria is correct option as this affects human health.
The correct option is D. Production of insulin by bacteria. This advance in DNA technology has had a direct impact on human health by providing a reliable and efficient source of insulin for people with diabetes.
DNA technology has led to numerous advancements in the field of medicine, but the production of human insulin by recombinant DNA technology has been one of the most significant breakthroughs. Genetic engineering allows the transfer of the human gene for insulin into bacteria, enabling them to read the DNA and produce the human protein. This process has revolutionized the treatment for diabetic patients, as bacteria can be cultured on a large scale to provide a consistent and affordable supply of insulin. Watson and Crick's discovery of the DNA structure was crucial for these advancements, as understanding the double helix model was necessary for subsequent genetic manipulation and engineering. This development is an illustrative example of how the insights from the Human Genome Project and advancements in biotechnology have converged to improve human health outcomes.
Which of the following would occur if all of the starfish were suddenly eliminated from this ecosystem
since there is no answer choices the best I can do is if all the starfish were suddently eliminated from the ecosystem than what the starfish feeds on would grow tremendously in population and whatever feeds on the starfish wold drop in population
The elimination of starfish from an ecosystem could cause unchecked prey population growth, declines in biodiversity, and a potential ecosystem collapse due to their role as a keystone species.
Explanation:If all of the starfish were suddenly eliminated from an ecosystem, it would likely lead to significant ecological consequences due to the starfish's role as a keystone species. Starfish often prey on species such as mussels, keeping their populations in check and allowing for greater biodiversity. Without starfish, their prey's populations could grow unchecked, monopolizing resources and outcompeting other species, potentially leading to declines in biodiversity and the eventual collapse of the ecosystem. Moreover, with less predation on species lower on the food web, there could be a cascade effect throughout the ecosystem, affecting numerous other species and ecological processes. An ecosystem without starfish could also impact human activities, such as fisheries, that depend on the balance maintained by these predators.
What is one risk we face when humans use artificial selection to change species.
The act of maintaining the earth for the generations after us is called what
The correct answer is sustainability.
The procedure of sustaining change in a balanced manner, in which the direction of investments, exploitation of resources, institutional change, and the orientation of technological development are all in synchronization and upsurge both the present and the future prospective to meet the human aspirations and requirements is known as sustainability.
The act of maintaining the earth for the generations after us is called sustainability.
Explanation:Sustainability is the way toward keeping up change in a reasonable manner, in which the misuse of assets, the course of speculations, the introduction of innovative improvement and institutional change are all in congruity and upgrade both current and future potential to address human issues and desires.
Which is a function of the spinal cord? A. It helps the spine to provide structural support for the body. B. It allows the back to be flexible and move at different angles. C. It transmits information between different parts of the nervous system. D. It produces hormones to send chemical signals throughout the body.
The correct answer is option C which is the function of spinal cord is to transport information between different parts of the nervous system.
Explanation:Nervous system has two parts:
Central nervous system Peripheral nervous system.Central nervous system includes brain and peripheral nervous system includes spinal cord.
Spinal cord receives nerve impulses from body and transport it to the brain.
It also receives orders in form of nerve impulses which are transported to receptors for response.
The function is transmits information between different parts of the nervous system, the correct option is C.
Which is a function of the spinal cord?The primary function of the spinal cord is to relay sensory information from the body to the brain and transmit motor commands from the brain to various parts of the body.
It acts as a communication pathway for the nervous system, allowing for the coordination of voluntary and reflexive movements and the transmission of sensory information. Options A, B, and D do not accurately describe the function of the spinal cord.
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Which substance is produced as a by-product of both glycolysis and aerobic respiration? A. NADH B. acetyl CoA C. ATP D. glucose
The correct answer is option C, that is, ATP.
Glycolysis refers to the dissociation of sugar, generally the glucose into more convenient components in order to generate energy. The net end components of glycolysis are two NADH, two pyruvate, and two molecules of ATP.
The cells going through the procedure of aerobic respiration generate six molecules of carbon dioxide, six molecules of water, and up to 30 molecules of ATP, which is directly used to generate energy, from each molecule of glucose in the existence of enough oxygen.
Thus, the by-product of both the procedures is ATP.
ATP is produced as a by-product of both glycolysis and aerobic respiration.
Further Explanation:
The accurate meaning of glycolysis is "splitting sugars." It is the process of producing energy through the breakdown of glucose. In the glycolysis process, a six-carbon sugar mainly called glucose is breakdown into two molecules of the pyruvate which are three-carbon sugars. This multiple step process produces ATP, NADH, and pyruvate. So, glycolysis is the process of the formation of pyruvate molecules from glucose with the help of many enzymes.
Glycolysis refers to the dissociation of sugar, generally the glucose into more convenient components to generate energy. The net end components of glycolysis are two NADH, two pyruvate, and two molecules of ATP. The cells going through the procedure of aerobic respiration generate water, carbon dioxide and around 30 molecules of ATP. These molecules are used directly to make energy. Thus, the by-product of both procedures is ATP.
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Answer Details:
Grade: High School
Subject: Biology
Topic: Glycolysis
Keywords:
ATP, glycolysis, energy, molecule, aerobic respiration, component, NADH, pyruvate, enzyme, sugar, breakdown, procedure, multistep.