Small Birds
● Insects
Insects
Owls
Plants
The removal of which of these would negatively affect the most populations in this ecosystem?
Snakes
Frogs

At the highest measurement for total nutrients, nitrogen can vary depending on the source and composition of the nutrients being measured.

However, in most cases, nitrogen makes up a significant portion of the total nutrients. Nitrogen is one of the most important macronutrients required for plant growth and development, and it is an essential component of chlorophyll, the pigment that gives plants their green color.

In terms of percentages, the amount of nitrogen in total nutrients can range from 40% to 80%. This percentage can vary depending on the type of plant, soil conditions, and the amount and source of fertilizers used. For example, in soils with high organic matter, nitrogen may make up a higher percentage of the total nutrients, while in sandy soils, the percentage may be lower.

In conclusion, nitrogen is a critical component of plant nutrition, and it can make up a significant portion of total nutrients. Understanding the role of nitrogen in plant growth and development can help gardeners and farmers optimize their soil fertility and improve crop yields.

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The characteristic that is not found in members of the domain archaea is the lack of peptidoglycan in their cell walls.

Archaea are single-celled organisms that have a distinct cellular structure from both bacteria and eukaryotes. They are found in a wide range of environments, from extreme hot springs to deep-sea vents, and are known for their ability to carry out unusual metabolic processes.

Some archaea, such as hyperthermophiles, thrive in extremely high temperatures, while others, like extreme halophiles, can tolerate highly saline conditions. Despite their ability to survive in harsh environments, archaea are not known to cause diseases in humans.

In fact, some archaea have been found to have potential benefits for human health, such as producing antibiotics and aiding in the digestion of food. Overall, the lack of peptidoglycan in the cell walls of archaea sets them apart from bacteria and is a key characteristic of this domain.

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The two months in 2012 that we would hypothesize that phytoplankton blooms would occur in would be April and May.

Phytoplankton blooms occur when the population of a certain type of phytoplankton increases rapidly in an aquatic environment. This usually occurs when the environment is nutrient-rich, meaning there are plenty of nutrients available for the phytoplankton to consume and reproduce.

The reason this is considered a bloom is because such rapid growth can lead to large patches of green or brown algae floating on the surface of lakes and oceans. These blooms are beneficial and provide food for many animals, as well as help remove carbon dioxide from our atmosphere.

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Covalent bonds are generally considered stronger than ionic bonds in biology.

Covalent bonds involve the sharing of electrons between atoms, which creates a strong bond that holds molecules together. Ionic bonds, on the other hand, involve the transfer of electrons between atoms, creating a weaker bond that can easily be broken by water molecules.

However, the strength of a bond also depends on the specific atoms involved and the conditions under which the bond is formed. For example, some covalent bonds can be easily broken by enzymes or other chemical reactions, while some ionic bonds can become stronger in certain environments.

Hence, covalent bonds are typically stronger than ionic bonds in biological systems, but the strength of a bond is influenced by many factors beyond just its type.

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Yes, there were certain trends between temperature and weather conditions in Mark's data. Generally, it seemed that areas with sunny weather had higher temperatures.

For example, when Mark's data showed temperatures of around 90°F, the weather was sunny. In contrast, when the temperatures dropped to around 50°F, the weather was cloudy. Additionally, areas with high humidity also had higher temperatures. For instance, when the humidity was high, temperatures were around 80°F.

The opposite was true when humidity levels were low; in these cases, the temperatures were around 50°F. All in all, Mark's data showed a correlation between temperature and weather conditions, with sunny and humid weather associated with higher temperatures.

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Depolarization, repolarization, and hyperpolarization are all physiological processes that occur during the transmission of nerve impulses or action potentials in neurons.

Depolarization occurs when there is a rapid influx of positively charged ions, such as sodium (Na+) into the neuron, resulting in a more positive membrane potential.

Repolarization, on the other hand, occurs when there is a rapid outflow of positively charged ions, such as potassium (K+), from the neuron, restoring the negative membrane potential.

Hyperpolarization is the period when the membrane potential becomes more negative than the resting membrane potential due to the efflux of potassium ions. Together, these processes allow for the transmission of electrical impulses along the length of the neuron, ultimately leading to the release of neurotransmitters at the synapse.

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Complete question :

Differentiate between depolarization, repolarization and hyperpolarization.

We can use a combination of field observations and sampling techniques to determine the number of rabbits in each area.

Here is a plan to determine the rabbit population in each area:

Therefore, in this way we can use a combination of field observations and sampling techniques to determine the rabbit population in each area.

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Liquids have several unique characteristics that make them different from solids and gases. One of these characteristics is that liquids are able to flow and take the shape of the container they are in.

This is because liquids have a relatively low viscosity, which means that their molecules are able to move around easily. This is why liquids are able to change shape in order to fill the container.

Another unique characteristic of liquids is that their molecules are held together by weak intermolecular forces. This is why liquids can be poured and mixed with other liquids.

This is because the weak intermolecular forces between the molecules allow them to move around freely and mix with each other. This is also why liquids have a low boiling point and can evaporate at room temperature.

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Answer: D

Different islands had very different food resources available, and only individuals that were adapted to eat those food resources survived and reproduced on that island.

Explanation: Hope it was right!

The statement "Populations that are not exposed to predators should become more red over time, due to natural selection" is most likely true because those with more red in their pigmentation are more likely to be eaten by predators, making them less likely to live and reproduce.

Individuals with more red in their coloration are more likely to be eaten by predators means that they are less likely to survive and reproduce. Therefore, over time, natural selection would favor individuals with less red in their coloration, leading to a decrease in the amount of red in the population.

However, in the absence of predators, there would be no selective pressure against individuals with more red in their coloration, and so they would be more likely to survive and reproduce. As a result, over time, natural selection would favor individuals with more red in their coloration, leading to an increase in the amount of red in the population.

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The probable question may be:

suppose that individuals in a population of beetles differ in the amount of red in their coloration. the coloration is not genetically inherited. individuals with more red are more likely to be eaten by predators. in all other respects, the beetles are the same. which statement is most likely true?

Populations that are not exposed to predators should become more red over time, due to natural selection. Populations that are not exposed to predators should become less red over time due to natural selection. Because color does not affect survivorship, populations in the presence of predators are unlikely to evolve color changes via natural selection. Individuals should evolve to become redder when predators are absent. Because color is not inherited, populations in the presence of predators are unlikely to evolve color changes via natural selection.

At the end of meiosis I, each chromosome still consists of two sister chromatids, but the number of chromosomes is reduced by half.

This reduction is due to the separation of homologous chromosomes, which are pulled to opposite poles of the cell during the first division. At the end of meiosis II, the sister chromatids finally separate, resulting in four haploid daughter cells, each containing a single chromosome. So, at the end of meiosis II, the chromosomes are in their haploid form, with only one chromatid per chromosome. In summary, the chromosomes at the end of Meiosis I are still composed of sister chromatids, while the chromosomes at the end of Meiosis II are single chromatids in each of the four haploid cells.

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The following actions are harmful to the environment, it is important to be mindful of the impact our actions have on the environment and to strive to make choices that help to conserve natural resources and protect the planet.

Here are some examples of actions and whether they harm or conserve the environment:

1. Dumping toxic waste into a river: harms the environment
Dumping toxic waste into a river can cause serious damage to the ecosystem, including harming aquatic life and contaminating the water supply for people and animals.

2. Planting trees in a deforested area: conserves the environment
Planting trees in a deforested area can help to restore the natural ecosystem, provide habitat for wildlife, and help to mitigate the effects of climate change.

3. Driving a car that gets poor gas mileage: harms the environment
Driving a car that gets poor gas mileage contributes to air pollution and greenhouse gas emissions, which can harm the environment and contribute to climate change.

4. Using energy-efficient light bulbs in your home: conserves the environment
Using energy-efficient light bulbs can help to reduce energy consumption and greenhouse gas emissions, conserving natural resources and helping to mitigate the effects of climate change.

5. Using pesticides on crops: harms the environment
Using pesticides on crops can harm beneficial insects, birds, and other animals, as well as pollute soil and water resources.

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Kepler's mathematical abilities and his commitment to empirical observation helped him construct the scientific explanation of the solar system.

Kepler's three laws of planetary motion laid the foundation for modern astronomy and revolutionized the scientific understanding of the solar system. Kepler's mathematical abilities and his meticulous observations of planetary motion were the key to his discoveries.

Kepler was skilled in mathematics and geometry, and he used these skills to create models that could explain the observed motions of the planets.

He also recognized the importance of empirical evidence, and he spent years collecting and analyzing data on the positions and movements of the planets.

Kepler's commitment to empirical observation and his mathematical abilities allowed him to construct a scientific explanation of the solar system that was based on evidence and rigorous mathematical reasoning.

His work laid the groundwork for later discoveries in astronomy and helped to establish the scientific method as a powerful tool for understanding the natural world.

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In the progression from smaller to larger components of the lymphatic pathway, the lymphatic vessels join one of two collecting ducts called the thoracic duct and the right lymphatic duct.

The lymphatic system is a network of vessels and tissues that work together to transport lymph, a clear fluid containing white blood cells, throughout the body. Lymphatic vessels range in size from tiny capillaries to larger vessels that resemble veins.

As lymphatic vessels converge, they join one of two larger collecting ducts: the thoracic duct or the right lymphatic duct. The thoracic duct is the larger of the two and drains lymph from the lower body and the left side of the head, neck, and chest into the left subclavian vein.

The right lymphatic duct is smaller and drains lymph from the right side of the head, neck, and chest into the right subclavian vein. These ducts return the lymph to the circulatory system, where it is eventually returned to the bloodstream.

Understanding the anatomy and function of the lymphatic system is important for understanding the body's immune response and for diagnosing and treating lymphatic disorders.

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The statement,"In the progression from smaller to larger components of the lymphatic pathway, the lymphatic join one of two collecting." is False.

In the progression from smaller to larger components of the lymphatic pathway, the lymphatic vessels join one of two collecting ducts, not collecting vessels. These collecting ducts are the thoracic duct and the right lymphatic duct.

Lymphatic vessels begin as lymphatic capillaries that merge to form lymphatic collecting vessels. Lymph drainage from the collecting vessels enters the lymphatic ducts. The lymphatic ducts then return the lymph to the bloodstream.

The thoracic duct is the larger of the two lymphatic collecting ducts, while the right lymphatic duct is the shorter and smaller one.

The lymphatic system plays an essential role in maintaining fluid balance and immunity in the body. Lymphatic vessels transport lymph, a fluid that contains white blood cells, to the lymph nodes, where foreign substances and bacteria are filtered out.

The lymphatic system also absorbs fats from the digestive system and transports them to the bloodstream.

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If the inner lining of the air sacs is neither thin nor highly vascularized, it can be inferred that the air sacs are not efficient in gas exchange. Air sacs are found in the respiratory system of birds and some reptiles, and they play a critical role in facilitating efficient gas exchange.

During inhalation, fresh air enters the air sacs and travels through the lungs, and during exhalation, stale air exits the air sacs. The walls of the air sacs are lined with capillaries that allow for the exchange of oxygen and carbon dioxide with the blood.

If the inner lining of the air sacs is not thin, this indicates that there is less surface area available for gas exchange, which would make the respiratory system less efficient.

Additionally, if the air sacs are not highly vascularized, this means that there are fewer blood vessels available to exchange gases, further reducing the efficiency of gas exchange.

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The tall parent plants were heterozygous (Tt) to produce a short (tt) offspring.

In pea plants, the tall gene (T) is dominant and the short gene (t) is recessive. Two tall pea plants were crossed and one of the offspring plants was short (tt). The tall parent plants must have been heterozygous (Tt).

Step-by-step explanation:
1. The tall gene (T) is dominant, and the short gene (t) is recessive.
2. Two tall plants were crossed, which means they could either be homozygous dominant (TT) or heterozygous (Tt).
3. One of the offspring plants was short (tt). This indicates that both parent plants must have contributed a recessive gene (t).
4. Since both tall parent plants had to contribute the recessive gene, they must have been heterozygous (Tt).

Therefore, the tall parent plants were heterozygous (Tt) to produce a short (tt) offspring.

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It sounds like the mouse may have a prolapsed uterus or a vaginal infection. It is important to see veterinarian for proper diagnosis and treatment.

As the female mouse is experiencing perineal swelling, bleeding and a possible prolapse. All these symptoms may indicate a serious medical issue.

It is important to take her to a veterinarian who specializes in exotic pets as soon as possible. They will diagnose the problem and provide proper treatment which can include antibiotics or surgery. There is need to make sure she has a clean and comfortable environment and try to minimize stressors as much as possible.

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Natural selection plays an important role in the survival of both gray tree frogs and green tree frogs. Variation is the first necessary factor for natural selection. For the gray tree frogs, variations in color allow them to blend in with the bark of the trees in their forest environment.

Here, correct Answers is variation, Overproduction, Competition.

For the green tree frogs, variations in color allow them to blend in with the tall reeds and grasses of their wetland environment. The overproduction of these frogs is also necessary for natural selection to occur. With more frogs, the competition for resources and mates increases, forcing them to adapt and evolve in order to survive.

Finally, reproduction is necessary for natural selection. If the frogs cannot reproduce, the species will die out and natural selection will not be able to take place. Natural selection is a powerful mechanism that helps these frogs to survive in their respective environments.

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Structure A is the stigma of a flower. The stigma is the sticky end of the female reproductive organ of the flower, which is the pistil.

The purpose of stigma is to receive pollen from the male reproductive organ of the flower, which is the anther. The pollen sticks to the stigma, and then travels down the style, which is the stalk of the pistil, to the ovary, which contains the egg cells to be fertilized.

The stigma also has a role in the dissemination of the flower’s scent, which helps to attract pollinators such as bees, butterflies, and hummingbirds.

The stigma is also important for the genetic diversity of the plant, as the pollen from different plants will often have different genetic material, which will help the plant to be more resistant to disease and better adapted to its environment.

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When performing compression-only CPR, the rate of compressions per minute should be at least 100 to 120 compressions.

Compression-only CPR is a type of cardiopulmonary resuscitation that involves only chest compressions without rescue breaths. It is recommended for untrained bystanders or those who are unwilling or unable to perform rescue breaths.

The American Heart Association recommends that compressions should be performed at a rate of 100 to 120 compressions per minute. This ensures that the blood flow to the heart and brain is maintained and helps to maximize the effectiveness of the CPR. It is also important to allow for full chest recoil between compressions to allow for blood flow back to the heart.

It is important to note that while compression-only CPR is better than no CPR at all, traditional CPR with both chest compressions and rescue breaths is still the gold standard for providing the best chance of survival for someone experiencing cardiac arrest.

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Nuclear power plants generate large amounts of nuclear waste, which is highly radioactive and potentially hazardous to human health and the environment.

To safely dispose of nuclear waste, power plants must follow strict rules and regulations. In the United States, the Nuclear Regulatory Commission (NRC) sets regulations for the safe handling, storage, and disposal of nuclear waste.

The regulations require power plants to store spent nuclear fuel in specially designed storage facilities that are secure and isolated from the environment. The NRC also regulates the transport of nuclear waste to ensure that it is safely and securely transported to its final destination.

Additionally, power plants are required to maintain detailed records and documentation of the handling and disposal of nuclear waste to ensure that it is done safely and efficiently.

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Without gut bacteria, humans would be in a state of disarray. Gut bacteria is essential for digestion, immunity and health of the human body.

They help break down food in the digestive tract, synthesize vitamins, produce enzymes and protect the body from potential pathogens. They also create an environment that allows beneficial bacteria to colonize the digestive tract and help protect the body from environmental toxins.

Without gut bacteria, humans would be more susceptible to infection, experience digestive issues such as constipation, and would be unable to absorb nutrients properly. Additionally, gut bacteria is necessary for the production of vitamin K, which is essential for blood clotting and wound healing.

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Lymphatic pathways begin as lymphatic capillaries that merge to form lymphatic collecting vessels.
Lymph drainage from collecting ducts enters the subclavian veins.
Once tissue (interstitial) fluid is inside a lymphatic capillary, the fluid is called lymph.
Lymphatic vessels contain valves that help prevent the backflow of lymph.
Lymphatic vessels usually lead to lymph nodes that filter the fluid being transported.
The thoracic duct is the larger and longer of the two lymphatic collecting ducts.

The lymphatic system is a network of vessels and tissues responsible for filtering and returning interstitial fluid and proteins to the bloodstream.

Lymphatic capillaries are found throughout the body, and they join together to form larger lymphatic vessels that ultimately lead to the lymph nodes.

Lymph nodes are specialized structures that filter lymph, removing foreign particles such as bacteria and cancer cells. Once filtered, the lymph is returned to the bloodstream via the subclavian veins.

The lymphatic system plays a crucial role in immune function and is important in maintaining fluid balance in the body.

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Steve can cause a lot of harm to himself, his team and the organisation he is working for by acting in a role he is not trained for. If Steve is not trained for the role he is acting in, he is likely to make mistakes that can have long-term consequences.

For example, if Steve is not trained to handle financial transactions, he could make mistakes in the accounting books which could lead to losses for the organisation. Furthermore, if Steve is not trained to handle difficult customers, he may not be able to resolve customer issues effectively and efficiently, leading to customer dissatisfaction and a loss of business.

Finally, if Steve is not trained to manage a team, he may not be able to manage the team effectively and could result in a lack of productivity and morale. In short, acting in a role Steve is not trained for can cause a lot of damage.

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Transcription and translation are the two processes involved in protein synthesis. 1a- mRNA codons: AUG AUU CCG CCA GCA UAC UAG. 1b- Amino Acids: Met-Ile- Pro-Pro-Ala-Tyr. 2- Severe mutation replaces isoleusine by threonine. The middle uracyl from the second codon must be replaced by a cytosine. 3- Alteration in enzymatic activity.

Transcription and translation are two processes involved in protein synthesis.

    DNA triplets:       TAC   TAA   GGC   GGT   CGT   ATG   ATC

1a- mRNA codons:   AUG   AUU  CCG   CCA   GCA   UAC  UAG

1b- Amino Acids:       Met   Ile       Pro      Pro    Ala      Tyr   Stop  

2- Mutation

mRNA codons:   AUG   ACU  CCG   CCA   GCA   UAC  UAG

Amino Acids:       Met     Thr    Pro     Pro      Ala     Tyr   Stop

The severe PKU mutation occurs when a nucleotide substitutes another nucleotide. In this case, in mRNA molecule, an uracyle from the second codon was replaced by a cytosine. Hence, the new codon coded for Threonine instead of coding for isoleusine as the original sequence.

The column Amino acid change in PHA enzyme shows that the severe mutation involves the change in which isoleusine is replaced by threonine.

In order to produce this point mutation, the middle uracyl from the codon must be replaced by a cytosine.

3- Mutations impact on phenylalanine hydroxylase (PHA) enzymatic activity, causing a phenotypic range that varies between the severe PKU and the mild PKU. Alterations in the enzyme activity may drive the enzyme to consume all the stored phenylalanine and to produce wastes that are toxic to the organism, specially to te brain.  

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When preparing a root tissue sample from corn, a monocot, a typical monocot root is composed of various cells and tissues that can be observed from the outermost layer to the innermost layers. The epidermis is the outermost layer of the root that functions in absorbing water and minerals from the soil.

It also provides protection against harmful microorganisms. The cortex is the next layer, composed of parenchyma cells that store starch and nutrients. The endodermis is a single layer of cells that encloses the vascular tissue and acts as a barrier to control the movement of substances between the root and shoot. The pericycle is a layer of cells that surrounds the vascular tissue and gives rise to lateral roots. Finally, the vascular tissue is composed of the xylem and phloem, which transport water, minerals, and nutrients throughout the plant.

When comparing monocot and dicot roots, the main difference lies in their vascular tissue arrangement. Monocots have a scattered arrangement of vascular bundles, while dicots have a ring-like arrangement of vascular bundles. Monocot roots also lack a well-defined cortex, and their endodermis has a distinct structure known as the Casparian strip, which regulates the movement of substances.

Specialized roots, such as aerial roots, prop roots, and storage roots, exhibit unique anatomy compared to typical roots. Aerial roots, found in plants like orchids and mangroves, are roots that grow above the ground to absorb moisture and nutrients from the air. They have a thick epidermis and a spongy cortex for water storage. Prop roots, found in plants like corn and banyan trees, grow from the stem and provide extra support to the plant. They have a well-developed pericycle that gives rise to lateral roots for added anchorage. Storage roots, found in plants like carrots and sweet potatoes, are roots that store large amounts of carbohydrates for the plant's energy needs. They have a specialized cortex composed of parenchyma cells with abundant starch granules.

In conclusion, understanding the anatomy of roots is crucial in plant science. Monocot roots have a distinct arrangement of cells and tissues, different from dicots. Specialized roots have unique structures that allow them to perform specific functions, such as absorption, support, and storage.

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The problem is that milk left out on the counter by accident for two days spoiled before its expiration date.

This problem must be addressed because it is important to keep food within a certain temperature range to prevent it from spoiling. Milk is a perishable food, so it is especially important that it is kept in a cool environment.

Additionally, the milk was left out for two days, which is significantly longer than the usual time between purchase and consumption. This further increases the risk of spoilage, as the milk was not stored in the proper conditions for a prolonged period of time.

In order to avoid this problem, people must be aware of the temperature in which food should be stored, as well as the amount of time it should be stored for. Furthermore, people should be mindful of how long food has been left out, and take steps to ensure that it is not left out for too long.

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Answer:

Atopic Dermatitis

It is a skin disease causing much itchiness. Scratching leads to redness, swelling, cracking, weeping clear fluid, crusting, and scaling

Answer:

Atopic Dermatitis

What is Atopic Dermatitis?

It is a skin disease causing much itchiness. Scratching leads to redness, swelling, cracking, weeping clear fluid, crusting, and scaling.

What happens if there is an issue with the integumentary system?

The integumentary system is susceptible to a variety of diseases, disorders, and injuries. These range from annoying but relatively benign bacterial or fungal infections that are categorized as disorders, to skin cancer and severe burns, which can be fatal.

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In the cell cycle, external regulatory proteins direct cells Speed up or slow down the cell cycle.

Option A is correct.

The cell cycle, or cell-division cycle, is described as  the series of events that take place in a cell that cause it to divide into two daughter cells.

External regulatory proteins can influence the progression of the cell cycle by activating or inhibiting the cell cycle machinery. The cell cycle of a eukaryotic cell has three stages which includes :

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