The cell theory describes how cells are related to living things. The correct option is A.
What is cell theory?Cell theory is a scientific theory first proposed in the mid-nineteenth century that living organisms are made up of cells, that cells are the basic systemic unit of all organisms, and that all cells originate from pre-existing cells.
Cells, according to the definition of cell theory, are the building blocks of life. Cells are the building blocks of all living things and are responsible for all of life's processes. Cells comprise your hair, skin, organs, and so on.
When English physicist Robert Hooke described cork and other plant tissues in 1665, he coined the term cell since this cellulose structures of dead cork cells reminded him of the blocks of cells occupied by monks.
Thus, the correct option is A.
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Your question seems incomplete, the missing options are:
cell theory
cell history
cell poem
During mantle convection, heat from the earth's core causes material in the mantle to expand and move upward. When it reaches the top, it __
Answer:
Cools, moves to the side, and sinks, making a circular pattern.
Explanation:
It cools because it dissipates some of this heat to the lower crust. As it moves to the side, it drags along the crust hence powering the tectonic movements. As it cools, the liquid rock becomes denser and begins to sink to the bottom of the mantle as more hot and less dense liquid rock from the bottom rises. This forms a circular convection loop similar to that of water in a container being heated from below.
Answer:
cools, moves to the side, and sinks, making a circular pattern
4. Which of the following was the key point of Darwin and Wallace's theory of evolution by natural selection?
differential reproduction
competition
overproduction
variation
Answer:
differential reproduction
Explanation:
I got it right on a quiz
Final answer:
The key point of Darwin and Wallace's theory is variation, leading to differential reproduction due to competition for limited resources, which causes populations to evolve over time through natural selection.
Explanation:
The key point of Darwin and Wallace's theory of evolution by natural selection is variation among organisms, which leads to differential reproduction as a consequence of competition for limited resources. The process described by Darwin as descent with modification involves these inherently varied organisms reproducing in greater numbers than the environment can support. Thus, those with advantageous inherited traits that confer a competitive edge are more likely to survive and reproduce, passing those traits on to the next generation more frequently than those without such traits. Over time, this leads to a change in populations over generations and results in species becoming better adapted to their local environments, a process known as adaptive evolution.
hair cell divide how many times in a year
Answer:
Hair cells are present inside the inner ear that acts as a receptor of sound. Researchers affirmed that once there is a damage to the hair cell, it can regenerate in birds.
Damage hair cell can lead to loud noise which in turn affect the ear. The supporting cells are present along with the hair cells. When the hair cells get damaged, the supporting hair cell gets the signal to start the process of regeneration.
Hair cells divide rapidly during the anagen phase, which lasts between 2 to 7 years and is marked by the active growth of hair. The hair growth cycle includes a transition phase (catagen) and a resting phase (telogen) before restarting. The growth rate during anagen is on average 0.3 mm per day.
Explanation:The number of times hair cells divide in a year varies, as hair growth occurs in three distinct phases: the anagen phase, which can last from 2 to 7 years and involves rapid cell division at the hair root; the catagen phase, a brief 2-3 week period that transitions from active growth; and the telogen phase, resting for 2-4 months without new growth. At the end of the telogen phase, a new anagen phase begins, during which basal cells in the hair matrix produce a new follicle and push out the old hair. This cycle repeats throughout a person's life, and hair typically grows at an average rate of 0.3 mm per day during the anagen phase.
What does a contour line show?
The steepness or the gentleness of the slopes is depicted by contour lines.
Explanation:A contour line is a function of two number of variables which forms a curve connecting the points of the equal value. It is a three dimensional diagram with the function with x and y variable parallel the plane (x, y) .
In cartography, a form line joins purposes of equivalent rise (tallness) over a given level, for example, mean ocean level. A contour map is a guide represented with form lines, for instance, a topographic guide, which along these lines indicates valleys and slopes, and the steepness or tenderness of inclines.
The form interim of a shape guide is the distinction in height between progressive shape lines.
how does crossing over contribute to genetic diversity
Answer:
Crossing over, or recombination, is the exchange of chromosome segments between non-sister chromatids in meiosis. Crossing over creates new combinations of genes in the gametes that are not found in either parent, contributing to genetic diversity.
Explanation:
Crossing over is a genetic phenomenon that occurs during meiosis, resulting in the exchange of genetic material between homologous chromosomes. This process introduces new combinations of genes and contributes to genetic diversity. For example, crossing over can result in offspring with new color variations.
Explanation:Crossing over is a genetic phenomenon that occurs during meiosis, the process of cell division that produces gametes (sperm and eggs). It is the exchanging of genetic material between homologous chromosomes, resulting in the formation of new combinations of alleles. This process significantly contributes to genetic diversity in a population as it introduces new variations and combinations of genes.
During crossing over, portions of the chromatids of the homologous chromosomes break off and switch places with the corresponding portions on the opposite chromatids. This exchange of genetic material leads to the creation of recombinant chromosomes, which carry a unique combination of genes not present in either parental chromosome. These new combinations of genes can then be passed on to offspring, resulting in increased genetic diversity.
For example, let's consider a gene for flower color, where there are two possible alleles: red and white. If an individual carries one chromosome with the red allele and another chromosome with the white allele, crossing over can result in recombinant chromosomes carrying a red allele on one chromatid and a white allele on the other. This can lead to offspring with new color variations, such as pink or blend of red and white, contributing to genetic diversity within the population.
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Linda has a cup of coffee sitting in the cup holder in her car. She has to suddenly slam on her brakes and stop. The cup remained in the cup holder, but the coffee splashed and spilled everywhere. Newton's _____ law can best describe why this happened.
A. first
B. second
C. third
Answer:
A. First
Explanation:
Linda has some espresso kept in the cup holder in her vehicle. She needs to all of a sudden pummel on her brakes and stop. The cup stayed in the cup holder, yet the espresso sprinkled and spilled all over.
This happens on account of the Newton's first law of movement. It states that that an object at rest will remain at rest until and unless and external force is applied to it for its movement. It also describes the inertia.
how might the speed of climate change affect the ability of life on earth to adapt and survive
Answer:As the climate warms, it changes the nature of global rainfall, evaporation, snow, stream flow and other factors that affect water supply and quality. Specific impacts include: Warmer water temperatures affect water quality and accelerate water pollution.
The speed of climate change might affect the ability of life on earth to adapt and survive as follows:
Climate change is a phenomenon that includes those alterations in climatic parameters: temperatures, precipitations, diverse climatic phenomena, etc.
Normally these types of changes occur over several centuries, allowing animal and plant species to gradually adapt to new weather conditions.
However, when the climate changes rapidly, ecosystems lose the opportunity to adapt, with the consequence of producing migrations of living beings and even the death of those who for some reason cannot migrate.
When the speed of climate change exceeds the speed of dispersal of organisms, or when there are barriers that prevent such dispersal, species can only adapt or become extinct.
Regarding individuals, it has been found that climate change could affect their development, physiology and behaviors during the growth, reproduction and migration phases. On the other hand, it is also probable that the modification in the precipitation patterns and the increase in temperature affect the distribution, size, structure and abundance of the populations of some species. This, added to the effects of climate change on the hydrological cycle, could affect the interactions between species, nutrient cycles and the functioning, structure and distribution of ecosystems.Therefore, we can conclude that the speed of climate change might affect the ability of life on earth to adapt and survive, causing ecosystems to lose the opportunity to adapt, thus causing changes in the stability and survival of populations.
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Which two fields of study provide the core information that is used to classify organisms?
anatomy and artificial selection.
morphology and biochemistry.
morphology and anatomy.
artificial selection and biochemistry
Answer:
morphology and biochemistry
Explanation:
The two fields of study are: Morphology and anatomy
I'll give you an example of it, imagine that you found a mysterious insect in the forest, you don't know anything about it, you take it with you and give it to your biology teacher. The first thing that he is going to take a look at is at its anatomy, how the insect looks like, how many paws it has, wings, colors and etc.
After that, the teacher will probably ask you a few questions about the place you took the insect from, how was it, was it deep, lots of trees around, water near it, any fruit trees nearby, and by that, the teacher will analyze how this animal probably live, just by its habits with your information, if you're not sure about it, he'll need to check it out about how its body works, using again morphology and anatomy, and by doing that, is how you classify an organism.
calculate what is the surface area to -valume ratio of a cube whose sides are 3cm long?
Answer:
2 : 1
Explanation:
The surface area of the cube;Area of one (1) side * 6 sides = 3 *3 * 6 = 54 cm²
Volume;Length * Width * Height = 3 * 3 * 3 = 27 cm³
Surface area – to – volume ratio;54 : 27 = 2 : 1
What was the main reason for the settlement of the Plymouth Colony?
Freedom of religion and creating a Utopian society
Searching for gold and silver), making a profit (to become rich) and searching for
a Northwest Passage.
I do not know the answer
Provide a base of operations against Spanish and French aggression
To find a Northwest Passage to trade for spices
Answer:
The main reason behind Plymouth settlement is to achieve freedom of religion.
Explanation:
Some of the members of Separatist Church from England in 1620, September, during the era of King James I sailed towards Mayflower and ultimately landed in the Cape-Cod or Massachusetts. They finally decided to settle in the Plymouth Rock, the first permanent European settlement in New England, The Plymouth Colony.
The Separatist believed that the European Churches have somehow failed to perform the important works of Protestant Reformation, thus they left the Church and settled in Plymouth to regain freedom of religion and securing a better Utopian society there.
Felicia's teacher gives her the following list of types of organisms:
1. Ferns
2. Mushrooms
3. Algae
4. Insects
Protists, like Cryptomonads and Diatoms, are often unicellular and photosynthetic. Fungi, like Yeast and Agaricus bisporus, absorb nutrients from other organisms, distinguishing them from plants. Algae include various photosynthetic organisms important in aquatic ecosystems.
Explanation:The subject at hand involves understanding the classifications and characteristics of various organisms within the fields of biology and ecology. When asked to name two types of protists and two types of fungi, one could mention, as examples, Cryptomonads or Diatoms for protists, and Yeast or the common mushroom, Agaricus bisporus, for fungi. Protists are often unicellular and can be photosynthetic like Cryptomonads and Diatoms, while fungi such as Yeast and Agaricus bisporus are not capable of photosynthesis and instead absorb nutrients from their environment.
It's important to note that while plants undergo photosynthesis, fungi do not; they absorb nutrients from other organisms. This distinct mode of nutrition separates fungi from plants and places them in a unique kingdom of their own. Moreover, organisms like algae, which encompass a wide range of photosynthetic organisms such as seaweed or unicellular algae like Acetabularia, are key components of aquatic ecosystems.
Location A receives the sun's rays at an angle. Location B receives the sun's rays head on. Which statement is most likely true? Both locations are at the poles. Both locations are at the equator. Location A is at the equator and Location B is at the poles. Location A is at the poles and Location B is at the equator.
Answer:
Location A is at the poles and Location B is at the equator.
Explanation:
Locations at the same place cannot receive the Sun's rays from two different directions.
That eliminates Options A and B.
The diagram shows that locations at the poles receive the Sun's rays at an angle.
Location A is at the poles and Location B is at the equator.
Answer:
Location A is at the poles and Location B is at the equator.
Explanation:
hope it helps bye
How do respiration and photosynthesis affect the carbon cycle?
Which statement is true about solutions?
Solutions are heterogeneous and can be physically separated.
Solutions are mixtures that can be physically separated.
Solutions are homogeneous and must be chemically separated.
Solutions are made up of two substances that are chemically combined.
Answer:
Solution are mixtures that can be physically separated
Explanation:
This is because we can separate solutions physically using some distinct separation techniques such as evaporation, simple distillation, distillation e.t.c
Answer:
The answer is Solutions are mixtures that can be physically separated.
Explanation:
A solution is a homogeneous mixture at the molecular or ionic level of two or more pure substances that do not react with each other, whose components are in variable proportions. A chemical solution consists of a solvent and one or more solutes. The solute is the substance that dissolves and the solvent that dissolves it. the solutions can be separated by physical processes
Explain how oxygen is cycled between the plant and woman shown in the picture.name the specific processes involved
---------------------------------
The woman inhales oxygen produced by the plant in the process of PHOTOSYNTHESIS,
and she use it inside her body to release energy from the food molecules by the process of RESPIRATION also as a result of respiration Carbon dioxide gas is produced, which she exhales.
That carbon dioxide is absorbed from air by the plant and use it to prepare food from it in the presence of sunlight by the process of PHOTOSYNTHESIS in which oxygen is also produced as byproduct which is then released to air and is then inhaled by the woman again to repeat the cycle.
_____________________
The specific process involved is called photosynthesis.
The female inhales oxygen produced by means of the plant inside the procedure of photosynthesis and she or he uses it inside her frame to launch strength from the meals molecules through the process of respiratory additionally due to respiration Carbon dioxide gasoline is produced, which she exhales.
That carbon dioxide is absorbed from the air through the plant and used to put together meals from it in the presence of daylight by way of the technique of photosynthesis wherein oxygen is also produced as a byproduct which is then released into the air and is then inhaled by way of the lady again to repeat the cycle.
What is photosynthesis?Photosynthesis is the method by way of which flowers makes use of daylight, water, and carbon dioxide to create oxygen and electricity in the form of sugar. Photosynthesis is the manner via which flora uses daylight, water, and carbon dioxide to create oxygen and electricity in the form of sugar.
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Theories are backed up with lots of data, evidence, and observations from many
people over time.
True
False
Answer: True
Explanation:
A theory is the detailed explanation for the cause of processes and events that occur naturally.
These are supported by the evidences obtained from experimental trials. The information of the theory can be changed by new evidences obtain by people by applying the principle and methodology of the theory.
Please help me .....
Objective means that they are "facts", and do not include personal thoughts and beliefs (which is subjective).
In this case, your answers are:
1) Fact:
Facts are made based on data and analysis, and are supported by details and other known "facts" or truths. This means that they are right in any circumstances in most cases, or at least in the given circumstance that is provided.
2) Data:
Data is used to support the fact, which is objective. Without data, the claim would be seen as a opinion, or subjective, in meaning, a "I feel that it is this way". Without data, you will not have facts.
It is not:
3) Opinion:
Opinion is the antonym of Fact, and so if Fact is a answer choice, then Opinion is not. Opinion is based off of feelings, personal knowledge, and personal preferences. While useful in some cases, it is not objective.
4) Theory:
A theory is not objective, because it is a opinion that is provable (but is yet to be proven). This makes it subjective, until proven right.
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A friend goes to get a blood transfusion. Blood cells are 95%water you notice the nurse hanging a bag of 60%glucose to inject to your friend instead of blood. You will tell stop what did you think would happen to your friend's blood cells if they were transfused with sugar water instead of blood?
Answer:
The sugar will result in a formation of a clot the WBC cannot overcome and can result in a cardiac arrest, so the nurse should be stopped immediately.
Consider this animal cell. Which organelles are labeled G? centrioles
lysosomes
endoplasmic reticulum
mitochondria
Answer:
The given cell represents an animal cell, in which the organelle labelled as 'G' is mitochondrion. Mitochondria are membrane-bound organelles and their inner membrane is folded inward to form finger-like structures or cristae.
The mitochondria are known as the powerhouse of the cells as they are site for biochemical reactions of respiration and energy production.
Thus, the correct answer is 'mitochondrion.'
Animal cells are the eukaryotic cells that lack cell walls. In the labeled diagram of the animal cell, G is the mitochondria. Thus, option d is correct.
The missing labeled image is attached below.
What is a mitochondrion?A mitochondrion is the most crucial organelle of the animal and plant cell that has a membrane and is involved in the generation of the energy required to drive the cell function.
The biochemical reactions and processes occur in the mitochondria that produce energy in the form of ATP and are a finger-shaped small structure in the cytoplasm of the cell.
Therefore, the labeled organelle is option d. mitochondria.
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A species of Coral snake has a red, yellow, and black stripe pattern. One gene controls if the stripes are thick or thin. Thin(T) is dominant over thick(t). If two snakes heterozygous for this gene are crossed, what will be the phenotype(s) of their offspring? You may need to use a Punnett square to answer the question.
Answer:
75% with thin stripes, 25% will have thick stripes
Explanation:
A species of Coral snake has a red, yellow, and black stripe pattern. One gene controls if the stripes are thick or thin. Thin(T) is dominant over thick(t). If two snakes heterozygous for this gene are crossed, the phenotype(s) of their offspring wouldn't be even, making the answer, 75% with thin stripes, 25% with thick stripes.
Which of these is most like a closed system that does not allow transfers in or out of the system?
A Planet Earth
B A coral reef
C A school
D The human heart
Planet Earth is most like a closed system that does not allow transfers in or out of the system
Answer: A. Planet Earth
Explanation:
In a closed system, there is no exchange of mass. However, the energy might get exchanged. The exchange of mass and energy depends upon the property of the membrane or the boundary of the substance or an object.
The Earth is basically a closed framework; it acquires huge amount of energy from the Sun yet the exchange of matter with the outside is just about zero. Material streams between stores or sinks along pathways, or motions.
What are two ways animals contribute to the carbon cycle?
Final answer:
Animals contribute to the carbon cycle by exhaling carbon dioxide during respiration and via methane production in animal husbandry practices, both of which affect atmospheric carbon levels and can contribute to global warming.
Explanation:
Animals contribute to the carbon cycle in several significant ways. Firstly, they participate by releasing carbon dioxide (CO2) into the atmosphere as a byproduct of cellular respiration. When animals breathe, they take in oxygen and release CO2, which is a critical component of the global carbon cycle. Secondly, through the practice of animal husbandry, humans rear large numbers of livestock for food, which further contributes to the carbon cycle. These animals not only respire, releasing CO2 but also produce methane (CH4), a potent greenhouse gas, through enteric fermentation. Hence, animals influence both the natural carbon exchange in ecosystems and the anthropogenic impacts on the carbon cycle that can contribute to global warming.
Please fill in this I need help
Answer:
hypothesis
never become a law ideally should be tested... changedtentative scientific explanation... experimentationscientific theory
well tested explanation ... phenomena may still be useful ... supportedScientific Law
concise, specific descriptionhighly reliable scientific infoWhat climate region in North America is influenced by the
prevailing westerlies?
Answer:
Marine West Coast
Which is the primary function of glucose molecules? A. To make up the structure of cell membranes be. B. To act as a catalyst for chemical reactions C. To encode genetic information D.To provide energy for cell activities
Answer:
The primary function of glucose molecules is to provide energy for cell activities.
Explanation:
Glucose can best be described as carbohydrate which serves best as a primary fuel. Our body cells carry out a wide number of metabolic as well as biological functions. Glucose serves as the main energy derivation molecule for the accomplishment of these biological and metabolic functions. Every cell present in the body acquires the capability of using glucose as energy molecule.
Glucose is broken down by complex biological reactions into ATP which is the energy source for many cellular activities.
Answer:
D
Explanation:
it is a suger which means it also provides energy
Jamie is explaining to her classmates that she conducted an experiment over the weekend to see if adding more eggs to a cupcake recipe would affect the taste and texture of her cupcakes. She told her classmates that she noticed her cupcakes were moister and even taller. She said she measured each cupcake and the ones made with 3 eggs instead of two were 0.25-.05 centimeters taller than the ones with only 2 eggs. She also said that the ones with more eggs seemed to be a darker shade than the ones with fewer eggs. Jamie said the amount of eggs didn’t affect how many cupcakes she could make. She was only able to get 6 jumbo sized cupcakes with the recipe even if she added an extra egg. Question: List at least 2 qualitative and 2 quantitative observations that Jamie made in her experiment. (4 points)
Answer:
Qualitative: moister, taller, and darker shade.
Quantitative: 0.25-0.5 cm taller, how many cupcakes she could make.
Explanation:
Qualitative is observation based and Quantitative is mathematical based (i.e. measuring, etc.)
Answer:
2 qualitative observations are -
a) Cupcakes were moister
b) Cup cakes with more eggs were darker in shade than cupcakes with fewer eggs.
2 quantitative observations are -
a) Cup cakes with 3 eggs instead of two were 0.25-.05 centimeters taller
b) Cup cakes were taller
c) She got 6 jumbo sized cupcakes with the recipe even if she added an extra egg
Explanation:
Qualitative observations are those which cannot be defined numerically. There are mostly expression, choice and perception based
While quantitative observations are purely numerical observation having some sort of measured value. or the factors that can be measured in terms of numbers are also included in observation criteria such as long, weighted etc.
2 qualitative observations are -
a) Cupcakes were moister
b) Cup cakes with more eggs were darker in shade than cupcakes with fewer eggs.
2 quantitative observations are -
a) Cup cakes with 3 eggs instead of two were 0.25-.05 centimeters taller
b) Cup cakes were taller
c) She got 6 jumbo sized cupcakes with the recipe even if she added an extra egg
which survival need best defines "habitat"?
oxygen or carbon dioxide
someplace to live
food
water
Answer:
Someplace to live
Explanation:
Answer:
someplace to live
Explanation:
Which best describes the law of independent assortment?
A. The factors for each trait are separated independently when sex
cells form.
B. Traits can only be controlled by a single gene.
C. It is impossible to cross-pollinate plants.
D. The traits of an offspring are independent from the parents.
SUBMIT
Answer: A. The factors for each trait are separated independently when sex
cells form.
Explanation:
i got it right on the test
Final answer:
The law of independent assortment, described by A, asserts that genes sort into gametes independently, forming diverse combinations and contributing to genetic variation in offspring.
Explanation:
The correct answer to which best describes the law of independent assortment is A. The factors for each trait are separated independently when sex cells form. The law of independent assortment is an essential principle of genetics first described by Gregor Mendel through his work on pea plants.
This law explains how different genes independently separate from one another when reproductive cells develop. In a dihybrid cross, for instance, the combination of alleles for seed color and seed texture in pea plants assort independently during the formation of gametes. Each allele pairs for different characteristics sort into gametes randomly, leading to a variety of genetic combinations that contribute to genetic diversity in offspring.
In science. something that stands the test of time, often without change; (2) experimentally confirmed; over and over and (3) universal
Answer:
It's the universal law, Learned this like a billion years ago
Explanation:
Just know it, the universal law can't be changed, it's in place all the time, and even tho scientists test it it never changes, because they can never find out it's wrong.
Answer:
Scientific law is the law that stands the test of time, often without change. It is experimentally validated and confirmed again and again with time. It helps in creating right predictions for different situations.
Explanation:
Scientific law is a universal law which is applicable for everyone in the earth and also has uniformity. However, theory does not stands the test of time. It can be applied facts that are unrelated and relationships that are new. The theory comes from observations and experimental evidences.
What would you expect to be the final plant height for a plant grown in eight hours of light?
5 inches
10 inches
15 inches
20 inches
The final height of a plant exposed to eight hours of light per day is dependent on multiple factors, not just light duration. This includes light intensity, temperature, water and nutrient availability, type of plant, and its genetics. Experimental controls are required to determine precise growth results.
Explanation:The final height of a plant grown under eight hours of light/day cannot be determined purely from that information. In biology, plant growth is influenced by a range of factors including light duration, but also light intensity, temperature, water, and nutrient availability, species of plant, and genetic factors. For instance, some plants could potentially thrive under eight hours of light/day and grow to approximately 20 inches, while others may only reach around 5 inches. Controlled experimentation is necessary to determine the specific growth results for a particular plant under an eight-hours-of-light routine.
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Without more context, it is impossible to accurately predict the final height of a plant grown in eight hours of light, as plant growth depends on a variety of factors.
Explanation:The final height of a plant grown in eight hours of light is impossible to determine without additional information. Plants need light for photosynthesis, a process where light energy is converted to chemical energy for growth. The plant's height, however, depends on factors like the type of plant, its growth rate which is genotypically determined, the intensity of light, the quality of soil, and the availability of nutrients and water. For instance, some plants might grow just an inch with such limited light, while others might not grow at all. But few might grow substantially. So, options like 5 inches, 10 inches, 15 inches, or 20 inches are not accurate without more context.
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