AP BIOLOGY

Detailed explanation-1: -A cell cycle is a series of events that takes place in a cell as it grows and divides. A cell spends most of its time in what is called interphase, and during this time it grows, replicates its chromosomes, and prepares for cell division. The cell then leaves interphase, undergoes mitosis, and completes its division.

Detailed explanation-2: -As viewed in the microscope, the cell cycle is divided into two basic parts: mitosis and interphase. Mitosis (nuclear division) is the most dramatic stage of the cell cycle, corresponding to the separation of daughter chromosomes and usually ending with cell division (cytokinesis).

Detailed explanation-3: -Interphase. Phase of the cell cycle where the cell grows and makes a copy of its DNA. Mitosis. Phase of the cell cycle where the cell separates its DNA into two sets and divides, forming two new cells.

Detailed explanation-4: -When prophase is complete, the cell enters prometaphase-the second stage of mitosis. During prometaphase, phosphorylation of nuclear lamins by M-CDK causes the nuclear membrane to break down into numerous small vesicles. As a result, the spindle microtubules now have direct access to the genetic material of the cell.