Question

Describe the events taking place during interphase. What is the G0 (quiescent phase ) cell cycle?

Answer 1

Hint: During growth, the duration varies drastically, beginning rapidly to quickly produce cells and slow down over time as the organism matures. It may also serve as a transcriptional filter to regulate the expression of long genes that in short cycles are partially transcribed.

Complete answer: The preparatory stage of the cell cycle is called the interphase. During this process, the cell prepares for mitosis. It is the longest phase of the cell cycle. It is divided into three phases, such as G1, G2 and S-phase. Interphase starts with G1. The cells expand and synthesize mitosis-needed proteins. The S phase follows G1, and its key purpose is to duplicate the DNA of the cell. Chromosomes have two chromatids after the S-phase is complete, meaning each chromosome has two DNA molecules. The synthesis of further proteins characterizes G2, and organelles such as mitochondria expand and separate. The phase of G0 is the phase in which the cell neither divides nor prepares for the division, i.e. the cell is at its resting point. The mature cells that do not need to be separated join the G0 phase, for example; neurons. Often known as the dormant stage of the cell cycle, G0 (quiescent phase) is the phase, where the cell stays metabolically active but does not proliferate unless called upon to do so.

Note: A cell spends much of its time in the interphase, developing, replicating its chromosomes, and planning for the cell division. The cell then leaves the interphase and enters the mitosis stage and completes its division. The resulting cells are referred to as daughter cells.