Answer:
D. Cyclin
Explanation:
Cyclins drive the events of the cell cycle by partnering with a family of enzymes called the cyclin-dependent kinases (Cdks). A lone Cdk is inactive, but the binding of a cyclin activates it, making it a functional enzyme and allowing it to modify target proteins.
The nucleolus is the central support structure
The Trout are probably not used to the water and their surroundings.
Which of the following bio molecules typically contains both nitrogen and phosphate?
The answer to this question would be nucleic acids. That is because they contain a phosphate base and a nitrogen group.
