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Marat540 [252]
3 years ago
5

What chemicals regulate the cell cycle how do they work?

Biology
2 answers:
Natasha2012 [34]3 years ago
8 0

Answer:

Cyclins are the proteins that regulate the cell cycle through cyclin depedent kinases (Cdks).

Explanation:

Cyclins are the proteins that control the activity of cyclin dependent kinases. The levels of various cyclins fluctuates throughout the cell cycle. The active cyclin-dependent kinases (Cdks) regulate the cell cycle by phosphorylating the enzymes and other proteins that are needed during specific phase of the cell cycle.  

Example: M-cdks are the Cdks of M phase and activated cyclin--M-Cdk complex phosphorylate the protein to make the cell proceed through mitosis.

Molodets [167]3 years ago
5 0
Cyclins are the chemicals that regulate the cell cycle. Cyclins work by regulating the timing of the cell cycle in eukaryotic cell. Cyclins activates cyclin dependent kinases (CDKs) (an enzyme that works by adding <span>negatively charged phosphate groups to other molecules in a process called phosphorylation) by binding to it to form a cyclin-Cdk complex. This complex then functions by acting as a signal to the cell to move to the next cell cycle phase. At the end of the event, the cyclin is degraded, Cdk is deactivated, therefore signaling exit from a specific phase.</span>


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klio [65]

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The human population has also increased with the passage of time. However, the increase in the rate of the human population was not a stable one. At some times in the past, the population number declined due to environmental factors such as the eruption of a disease etc.

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Although a part of your question is missing, you might be referring to this question:

The human population has changed in ways that are similar to other populations. How has the human population changed since it first appeared on earth?

a. The population has generally increased at a relatively constant rate

b. the population has generally increased, and at rates that have varied over time

c. The population increases rapidly until it reaches carrying capacity, where it has remained for thousands of years

d. The population increases rapidly until it reaches carrying capacity, and then decreased at a constant rate

To learn more about human population, click here:

brainly.com/question/24067944

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