The cell cycle

the cell cycle

refers to the life cycle of a cell, from its division to two daughter cells.

1. interphase

2. mitosis/meiosis

cell cycle 2 main phases

interphase

cells spend most of their life span in

interphase

it is a period of intense biosynthetic activity in which the cell doubles in size and duplicates precisely its chromosome complement

1. G1 phase

2. S phase

3. G2 phase

interphase is subdivided to:

G1 phase

The most variable period of the cell cycle

G1 phase

the cell grows and produces more organelles.

quiescent scale (G0)

The cell may also enter a _ if not actively dividing.

S phase

Synthesis of DNA; DNA replication occurs, ensuring each daughter cell will receive a full set of chromosomes

G2 phase

the cell synthesizes the proteins and continues to increase in size

Mitosis/Meiosis

The division phase where the cell’s nucleus divides (nuclear division) and is followed by cytokinesis, the division of cytoplasm, resulting in two or four new cells

Cytokinesis

the physical process of cell division, which divides the cytoplasm of a parental cell into two daughter cells

Nuclear Division

genetic material in the nucleus is divided

mitosis and meiosis

there are two (2) kinds of nuclear division:

Cell Division

consists of two phases, nuclear division and cytokinesis