Interphase+1030

I

Interphase is cell activity before and after cell mitosis and replication.

Interphase
Before a cell can enter cell division, it needs to prepare itself by replicating its genetic information and all of the organelles. All of the preparations for cell divisions occur in Interphase. Interphase consists of 3 sections, G1, S, and G2 phases. G1 Phase After mitosis is complete, the daughter cells begin to resume their chemical operations. The length of the G1 phase determines the difference between swiftly and slowly dividing cells. The G1 phase can be slowed by the amount of nutrients available to an organism; therefore the cell needs more time and energy to collect the materials needed for mitosis. In animal cell interphase, the DNA is replicated. The cell also increases in size, we notice this as the cytoplasm has been enlarged. S Phase The S phase begins with the replication of all forms of a cell's DNA. When the DNA has been copied, the cell has twice the amount of chromatin and chromosomes. Once a cell enters S phase, it is pledged to carry out mitosis, regardless of the external conditions. A cell's organelles also begin to grow and replicate themselves. G2 Phase Proteins, such as kinase, which are critical for cell division are synthesized. The chromatin condenses into chomosomes, and the proteins necessary for construction of the spindle fibers are also are formed. Once the chromosomes are visible, the cell has engaged in the first stage of mitosis, prophase.