AP BIOLOGY

Detailed explanation-1: -During interphase, the cell undergoes normal growth processes while also preparing for cell division. It is the longest phase of the cell cycle, cell spends approximately 90% of its time in this phase. In order for a cell to move from interphase into the mitotic phase, many internal and external conditions must be met.

Detailed explanation-2: -A cell spends the longest in Interphase due to the following reasons: Cell growth takes place during this period. DNA synthesis takes place which is in preparation for pre-mitotic division. Replication of chromosomes takes place.

Detailed explanation-3: -The phase that makes up about 90% of the cell cycle is interphase. Although our cells must divide to replace themselves and facilitate growth and repair in the body, most of a cell’s life is not spent dividing. This time is called interphase. Interphase consists of three phases, G1, S and G2.

Detailed explanation-4: -However, mitosis and cytokinesis last only about an hour, so approximately 95% of the cell cycle is spent in interphase-the period between mitoses. During interphase, the chromosomes are decondensed and distributed throughout the nucleus, so the nucleus appears morphologically uniform.

Detailed explanation-5: -In fact, interphase takes up about 90% of a cell’s life. That leaves just 10% for mitosis! Cell before mitosis showing the location of the centrioles, microtubules, nuclear membrane, nucleolus, and DNA (Let’s Talk Science using an image by Aldona via iStockphoto). Interphase has three stages: G1, S and G2.