Answer:
Cyclin is a family of proteins that controls the progression of a cell through the cell cycle by activating cyclin-dependent kinase (CDK) enzymes or group of enzymes required for synthesis of cell cycle.

Diffusion refers to the random motion of particles from a medium of higher concentration to a medium of lower concentration.
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Answer:
I think the first one is filtration
Explanation:
That is respirator mask or a filtration mask I guess and if the man breathes the sawdust he will practically get sick
I hope I helped this is all I know
It is when their is sort of a dent somewhere on your body, dimples are usually found on the face, and sometimes you may only have a dimple on one side of your face
Answer:Planarians = flatworms
Marine worms = segmented worms
Pinworms = roundworms
Tapeworms = flatworms
Explanation:
I’m Built Different