Cell Cycle

Just what does a cell do with all its time?

Cell Cycle

G1

• Cell increases its supply of proteins

• Increases many of its organelles such as mitochondria and ribosomes

• Grows in size• Typical cell 8-10 hours

S Phase

• DNA synthesis (replicates, makes a copy)

• Occurs between G1 and G2

• At the end the chromosomes consist of sister chromatids

• Typical cell 6-8hours

G2

• Time of protein synthesis essential for cell division

• Makes copies of centrioles

• Typical cell 2 hours

Can you tell what goes on in each?

• Cell Cycle Movie

Cell Cycle Game

• Enter the Cell Cycle Game

• FUN!!!!!!!!!!!!!!!!!

Interphase

Cell is performing its various metabolic activities

90% of cell cycle time

Mitosis

• Cell Divides

• Typical cell – 1 hour

Mitosis: M phase