The cell cycle is regulated at the molecular level by a set of proteins known as

The cell cycle is regulated at the molecular level by a set of protein known as CYCLIN . Cyclin are a core regulator of the cell cycle. They are group of related proteins and four different types have been identified in humans. Each cyclin is associated with a particular phase of the cell cycle.

C14 dating since carbon is present in both living and no living objects .

Cbecause it is the only one describing a habitat