B. The first electron shell hold 8 electrons.
The role of cyclin-dependent kinases in the cell cycle is that, they stop the cycle if something has gone wrong.
Explanation:
In Eukaryotic cells cyclin-dependent kinases are universal regulator cell. It undergoes a constant cycle and degradation known as Mitotic and G1 cyclin. When cycle dependent cycle synthesize it acts like an activating protein and then bind to cyclin-dependent kinases forming cyclin-dependent kinases complex.
Now it acts as signal to the cell to pass the next phase of cell cycle. After its cyclin gets degraded, it deactivates the cyclin-dependent kinases and from particular phase signalling stop
When you exercise makes your body uses oxygen so breathing heavily increases your heart rate causeing your heart to pump more blood.
Chromatin and histones are found ind DNA-protein.
Hope this helped=)
There is 206 bones in a human breaking up everything that you stated up there
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