Interphase is the phase of the cell cycle in which the growth of cells and metabolic activity occur, but nuclear division does not. There are three stages in interphase: G1, S and G2.
The first stage of interphase is the G1 phase. During this stage, a new cell activates certain genes in its DNA in order to produce proteins. This process spurs on the metabolism of the cell that results in the production and breakdown of carbohydrates and lipids. The cell grows during this stage and converts food into energy from ATP.
The synthesis stage of interphase occurs after the G1 stage and begins with the replication of cellular DNA. Complex teams of enzymes copy the DNA molecules of each chromosome. When the cells contain nearly double the original amount of chromosomes, they move on to the G2 phase.
The final stage of interphase, the G2 phase, is when the cells prepare for division. An increase in synthesis of RNA and protein occurs, and the cells spend additional time checking and repairing the newly formed DNA sequences. This phase ends interphase. From here, cells continue on to the mitotic cycle of the cell cycle.
During interphase, which is the nondividing phase in a cell cycle, the growth and metabolic activities of a cell primarily occur, according to The Collin County Community College District. Interphase makes up around 90 percent of the cell cycle, and it is a period of intense biochemical activity wherein the cell grows and copies its chromosomes to prepare for cell division.Full Answer >
The M phase in the cell cycle is known as the mitotic phase and is comprised of mitosis and cytokinesis. The outcome of the M phase is two distinct but identical daughter cells with the same genetic material.Full Answer >
A quiescent cell that does not go into mitosis, or a cell destined to die, enters the G0 phase of the cell cycle. The G0 phase of the cell cycle actively represses mitosis, or cell division.Full Answer >
Cell cycle checkpoints are times during the cell cycle in which the cell checks to see whether it is ready to proceed with mitosis or cell division. Checkpoints occur at three different times during the cell cycle: G1, G2 and M.Full Answer >