BIOL201 Ch10.3 Control of the Cell Cycle | OpenStax Biology 

Biology 201 Lecture Video Covering Chapter 10.3 of OpenStax Biology Summary:
Different cells divide at different rates
External signals like hormones can regulate cell cycle
Internal checkpoints also regulate cell cycle
G1 checkpoint - point of no return, once passed cell is committed to dividing
G2 checkpoint - ensures proper chromosome replication
M Checkpoint - determines if sister chromatids attached to spindle correctly
Positive cell cycle regulators push through checkpoints
cyclins/cdks
Negative cell cycle regulators hold cells at checkpoints
Tumor suppressors like p53 and Rb
Lecture Presented by Dr. Ben Burrows for the College of Eastern Idaho
Course BIOL 201 Intro Biology