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2 years ago

CDKs are important in the regulation of the cell cycle. They carry out their function by:

Biology

1 answer:

nikdorinn [45]2 years ago

6 0

Answer:

A. Adding phosphate groups to target proteins

Explanation:

CDKs (cyclin-dependent kinases) are the protein kinases involved in regulation of the cell cycle. Cyclins are the regulatory proteins that serve to activate the cyclin-dependent kinases. The activity of various Cdks increases and then decreases as the cell proceeds through the cell cycle.

Binding of a specific CDK with its corresponding cyclin results in formation of a cyclin–Cdk complex. Cyclin–Cdk complexes serve to phosphorylate the target enzymes and other proteins. Phosphorylation activates some of these proteins while deactivating the others. For example, the protein p27 is degraded upon phosphorylation. Since p27 is one of the major inhibitor of cell division, the reduced levels of p27 makes the non-dividing cell s to enter the cell division.

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Which of the following could be considered both a renewable resource and a nonrenewable resource?iron oresea watersolar energywh

Monica [59]

Answer:

wheat crop

Explanation:

Resources can be either renewable or non renewable.

Renewable resource can be defined as the resources which have long availability or faster replenishment as compared to the consumption rate of the resource or both.

Examples include air, soil, plants, animals and others.

Alternatively, non renewable resource refers to the resources which are available for a limited amount of time or whose replenishment is slower as compared to its consumption rate or both.

Examples include coal, oil.

Wheat crop is both a renewable and a non renewable resource.

Wheat crop can be grown again and again. Also, wheat crop is renewable as long as the soil is available for its growth. Appropriate soil provides ideal platform for growth of wheat plants.

Hence, it is a renewable resource as long as it can be grown again and as long as the soil is available. Also, ideal conditions which favour wheat crops need to be available.

Wheat crop is available for a limited period of time after which it can become useless. Also, wheat crops can be destroyed before they can be consumed. Limited availability can be due to shorter usefulness of the crops after which they become non usable. Other reason for low availability is that the crops can be damaged before they can be harvested for use.

Thus, it is also a non renewable resource.

Sea water is a renewable resource since it is available for infinite period of time.

Solar energy is a renewable resource since it is available for infinite period of time.

Iron ore is a non renewable resource since it is not available for infinite period of time. This will perish when it is consumed completely and its replenishment takes a long period of time. Hence, it will be unavailable as long as it is not replenished.

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2 years ago

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What is gene flow? Apex

Anna11 [10]

Answer:

gene flow is the transfer of genetic variation from one population to another.

option D

4 0

1 year ago

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why does the presence of 22 large herbivore species at Mpala seem to contradict the competitive exclusion principle Dr. Pringle

stealth61 [152]

Dr. Pringle suggests that there's only very few large herbivorous species that can survive in certain area. The reason behind his claim is that according to him there will be only enough food for few large species, so there's natural limitations in the food sources, as there should be enough to support them in order for them to survive.

On the other hand, in Mpala, there's 22 large herbivorous species, which directly contradicts Dr. Pringle's hypothesis. The reason why so many large species of herbivores an survive in Mpala and always have enough food for all of them, is that they have all specialized in eating certain types of plants or parts of plants, thus they are not direct competition to one another, and there's always enough food for all of them.

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2 years ago

imagine you have data on the jaw structure of hundreds of species, and information about what each species ate. How could you us

densk [106]

Answer:

shoot a irish spring green like flight

Explanation:Imagine you have data on the jaw structure of hundreds of species, and information about what each species ate. How could you use this information to figure out what the new species eats?

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2 years ago

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During a science experiment, Courtney believes that she may have found a new cell that has never been seen before. This cell inc

Oksi-84 [34.3K]

Answer:

Courtney is looking at Prokaryotic Cell.

Explanation:

Ok, when Courtney is observing the science experiment, and finds a cell that includes DNA and has a nucleoid region but does not have nucleus, it is a prokaryotic cell and only the single-celled organisms of the domains Bacteria and Archaea are classified as prokaryotes, where pro means before and kary means nucleus.

Let's explain what is a prokaryotic cell: prokaryotes are unicellular organisms that lack organelles or other internal membrane-bound structures. Therefore, they do not have a nucleus, but, instead, generally have a single chromosome: a piece of circular, double-stranded DNA located in an area of the cell called the nucleoid. And most prokaryotes have a cell wall outside the plasma membrane.

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2 years ago

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