Answer & explanation:
The cell cycle is the sequence of processes that lead to cell growth and division, repetitively and continuously. The cell cycle is defined as the set between mitosis and the time that elapses between two mitoses (interphase).
Being responsible for mitosis, the cell cycle plays a fundamental role in processes such as cell reproduction, growth and development.
In addition, the cell cycle is part of the processes of tissue regeneration and repair, as well as the control of cell division.
The activation of the molecules responsible for the cell cycle divisions occur by the effect of kinases, which are enzymes that carry phosphate groups from energy donor molecules (such as ATP) to specific target molecules.
Kinases need to join cyclins (other proteins that are part of cell cycle control) for the transition between their first phases to occur (phase G1 and phase S).