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.
What is one risk we face when humans use artificial selection to change species.
When light is refracted
A. it keeps moving in the same direction as it passes into a new medium.
B. it is absorbed as it strikes the surface of a new medium.
C. it changes it direction and stays in the same medium.
D. it changes its direction as it passes into a new medium.
Answer:
d
Explanation:
Answer:
Study island ng
Melatonin is a molecule that is produced in the pineal gland and secreted into the blood. Melatonin then travels to different parts of the brain. It causes drowsiness and decreases body temperature to assist in the regulation of the sleep/wake cycle. What kind of control is used to regulate this molecule? A. muscular control, because the muscles can be used to control the release of melatonin B. neural control, because the brain sends the signal to release melatonin through nerve cells C. endocrine control, because melatonin is secreted into the blood and regulates body processes D. cardiovascular control, because melatonin flows through the blood to deliver the message
Answer:
C. endocrine control, because melatonin is secreted into the blood and regulates body processes
Explanation:
As mentioned in the question, melatonin is secreted by endocrine gland which is a part of human glandular or endocrine system. Endocrine system is responsible for secreting chemical messengers into the circulatory system of the humans, from where they travel to different target sites like brain.
Melatonin is also a chemical messenger which is secreted by pineal gland and travels through the blood stream to the targeted brain parts. When it reached the brain it directs it about the sleep wake cycle by causing lowered body temperature and increased drowsiness which together work in regulating sleep/wake cycle.
The endocrine system of the brain, is responsible for the regulation of melatonin secretion levels along with the hypothalamus region which get stimulated by light.
Therefore, C is the best option.
Hope it helps!
Answer:
C. endocrine control, because melatonin is secreted into the blood and regulates body processes.
Explanation:
Melatonin is a hormone linked to the circadian cycle, ie, the way the body organizes its functions when we are awake and during sleep. The substance begins to be produced in the pineal gland as day goes on to help the body prepare for sleep. It reaches its maximum level when we are sleeping. As the sun rises and the light returns, the gland reduces the production of melatonin, which signals that it is time to wake up.
This hormone is secreted directly into the blood and regulates body processes, so we can say that melatonin is controlled by the endocrine system, which is the system responsible for producing hormones that are released into the blood and travel the body to control body processes.
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.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.
An ATP molecule is made up of which of the following? Select one: a. Carboxylic group, ribose sugar, adenine base b. Phosphate groups, deoxyribose sugar, thymine base c. Phosphate groups, ribose sugar, adenine base
Final answer:
ATP is composed of a ribose sugar, an adenine base, and three phosphate groups. It is a high-energy molecule essential for various biological processes, and the correct structural components correspond to choice 'c' in the question.
Explanation:
An ATP molecule is composed of a ribose sugar, an adenine base, and three phosphate groups. These three parts amalgamate to form the nucleotide known as adenosine triphosphate (ATP), which plays a crucial role as an energy currency within the cell. ATP is considered a high-energy compound because of the considerable potential energy stored in the covalent bonds that link the trio of phosphate groups together. When these bonds are broken in a process called hydrolysis, a significant amount of energy is released that helps to power various cellular activities, ranging from muscle contraction to biochemical synthesis.
The correct answer to the question, which asks for the components making up an ATP molecule, is 'c. Phosphate groups, ribose sugar, adenine base.' This is the accurate structure that constitutes ATP, distinguishing it from other nucleotide molecules.
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.
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
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.
The activation of the sympathetic nervous system results in
A. An increase in digestion
B. A decrease in perspiration
C. A decrease in heart rate
D. An increase in respiratory rate
E. An increase in salvation
The right option is; D. An increase in respiratory rate
The activation of the sympathetic nervous system results in an increase in respiratory rate.
The sympathetic nervous system (SNS) is a part of the autonomic nervous system that induces the body's fight or flight response. The sympathetic nervous system functions through various networks of neurons and its activation results in pupil dilation, increased perspiration (sweating), decreased peristalsis (muscle contraction), increased heart rate, and increased blood pressure.
The activation of the sympathetic nervous system results in an increase in respiratory rate. So, the correct option is D.
What is the Sympathetic Nervous System?The sympathetic nervous system is a part of the autonomous nervous system and prepares the body for the fight or flight response during any potential danger.
The sympathetic nervous system functions to produce localized adjustments (sweating), and reflex adjustments of the cardiovascular system (heart rate). It also performs a crucial function in muscle contraction.
Therefore, the activation of the sympathetic nervous system results in an increase in respiratory rate.
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Which statements describe the Mercalli scale? Check all that apply. This scale measures seismic waves based on their size. This scale rates an earthquake according to how much damage it causes. This scale produces a single rating for earthquakes that reach the surface. This scale uses Roman numerals to rank the damage caused by an earthquake. This scale measures the magnitude of an earthquake based on the size of seismic waves.
The Mercalli intensity scale refers to a seismic intensity scale used for determining the earthquake intensity. It determines the influences of an earthquake. It is different from the moment magnitude, which is generally reported for an earthquake that is a determination of the energy discharged.
The Mercalli scale determines the influences of an earthquake on the surface of the Earth, objects of nature, humans, and made-made compositions on a scale from I to XII. It refers to a scale that quantifies earthquakes on the basis of their intensity and how much destruction they make at a specific place.
Hence, the correct answers are options this scale rates an earthquake according to how much damage it causes, and this scale uses Roman numerals to rank the damage caused by an earthquake.
Answer:
is B
Explanation:
for the one that's single answer
As demand for fossil fuels increases, all of the following events are likely except that __________. A. more fossil fuels will be created B. the price of fossil fuels will increase C. the cost of energy, such as electricity, will increase D. supplies will decline
Answer: A. more fossil fuels will be created
Fossil fuels are fuels which are formed over millions of years from dead remains of plants and animals buried under rocks. Heat from inside the earth and pressure from rock changes the dead remains into oil, natural gas and coal. Because these fuels cannot be replenish again they are called as nonrenewable fuels.
Answer: More Fossil Fuels Will Be Created
Explanation: Just Because That's the answer ;) Have A Blessed Day
The law of superposition states that layers of sedimentary rock are
A. ordered in a random fashion, with the age of the rock varying wildly from one layer to the next.
B. ordered in a time sequence, with the oldest layers on the bottom and the youngest on top.
C. ordered in a repeating pattern, with every third layer being identical.
D. ordered according to the age of the volcano that created the layer.
Answer:
B. ordered in a time sequence, with the oldest layers on the bottom and the youngest on top.
Explanation:
This is the right description of the way in which sedimentary rock is ordered. This is also compatible with the law of superposition. Sedimentary rock accumulates in the same order in which it is created. Therefore, the oldest layers are found at the bottom, while he newest ones are found at the top. This allows scientists to study the age of rock, and of any material that is found in these layers.
The law of superposition states that layers of sedimentary rock are ordered in a time sequence, with the oldest layers on the bottom and the youngest on top. Correct option is B.
The law of superposition is a fundamental principle in geology that states that in a sequence of undisturbed sedimentary rock layers, the oldest layer will be at the bottom, and the youngest layer will be at the top. This principle is based on the idea that in undisturbed rock layers, the deposition of new sediments occurs on top of older ones over time, creating a time sequence of rock layers with the oldest at the bottom and the youngest at the top. This principle is crucial in determining the relative ages of different rock layers and understanding the geologic history of an area.
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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
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.
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 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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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.
Which taxonomic category is made up of several classes?
The scheme of modern taxonomy goes:
Life > Domain > Kingdom > Phylum > Class > Order > Family > Genus > Species
So, a PHYLUM is made of several classes.
In taxonomic categories, family is made up of several classes.
Explanation:Taxonomic classification is a way in biology to group different organism on the basis of some characteristics.On this bases there are Some categories in taxonomic classification:Kingdom > Phylum > Class > Order > Family > Genus > Species.From left to right categories are on the basis of much specialized and specified characteristics.So according to above categories, different classes are present in family.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.
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.
All models have limitations
Answer:
true
Explanation:
because i took my test
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!! :)
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.
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 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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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.
Homeostasis refers to
A. the tendency of a cell to maintain a stable internal environment
B. the similarity of genetic traits to one another.
C. a mixture or solution that is the same throughout
D. the effect of natural selection on human evolution
Answer:
A. the tendency of a cell to maintain a stable internal environment
Homeostasis refers to the tendency of a cell to maintain a stable internal environment. The correct option is A.
What is homeostasis?Any self-regulating process, such as homeostasis, helps an organism retain stability while responding to environmental factors that are favorable for its survival. If homeostasis is effective, life goes on; if it is unsuccessful, the organism dies or suffers a catastrophe.
Homeostasis is a self-regulating process that enables an organism to retain internal stability while adapting to shifting external situations. It has emerged as the key unifying idea of physiology. The best illustration of homeostasis is the body's internal temperature.
Therefore, the correct option is A. the tendency of a cell to maintain a stable internal environment.
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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.
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.