Question

Variation in rates of cell division is regulated by a cell-cycle control system, which is a group of molecules, mostly proteins, within a cell that coordinates the events of the cell cycle. This control system functions through a system of checkpoints. Which assessment occurs at the G1/S checkpoint?

Answer 1

DNA is checked if there is any damage prior to commencement of cell division.

Step-by-step explanation:

The G1/S check point also known as restriction point is checkpoint stage of G1 phase. It is the phase which prepare the cell for the long journey of cell cycle.It is independent of any external stimulus or command to increase number and mass of cells.

The mechanisms at the G1/S checkpoints involved the activation of certain protein complexes and phosphorylation of the protein for DNA replications,centromere duplication and other events needed for events of cell cycle, so that any anomaly is checked for before cell cycle commences.

Answer 2

Answer:Interphase

Step-by-step explanation:

When a cell is in any phase of the cell cycle, it is referred to as *Interphase *.The cell cycle consist of three phases;G1, S, and G2.

*At G1 phase,a cell grows*.

*At S phase,the cell continues to grow as it duplicates it's chromosome ( i.e,chromosomes are replicated only during S phase*.

At G2, the cell grows more and prepares for mitosis.