Questions for Cell Cycle 1) Briefly describe all phases of the cell cycle and tell what happens in each.

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The Cell Cycle

Keila Woods

Grand Canyon University

BIO 100L

January 19, 2011

The Cell Cycle

Directions: Answer the following questions. Cite references as needed. Be sure to read the required Module 3 readings and view the required Web sites before completing the assignment.

Cell Cycle

Questions for Cell Cycle

1) Briefly describe all phases of the cell cycle and tell what happens in each.

a) Interphase: Before a cell can enter cell division, it needs to take in nutrients. All of the preparations are done during the interphase. Interphase proceeds in three stages, G1 phase, S phase, G2 phase. Cell division operates in a cycle. Therefore, interphase is preceded by previous cycle mitosis and cytokinesis (Module 3 Reading).

a. G1 phase: The cell increases the supply of proteins and increases its organelles.

b. S phase: Linear chromosome is replicated.

c. G2 phase: Increases protein preparing to replicate.

b) M phase: this phase consist of nuclear division karyokinesis. This phase has been broken down into several distinct phases, sequentially known as (Krogh, 2009, p. 191).

1. Prophase: Chromosomes take shape: the two centrosomes begin