10.1 Cell Cycle Flashcards
What is the G1 phase of the cell cycle?
The 1st phase of the cell cycle, increases size of the cell, and prepares for DNA replication.
What are the checkpoints for the G1 phase?
No damage to the cell and enough resources to continue.
What is the S phase of the cell cycle?
The 2nd phase of the cell cycle, replicates DNA.
What is the checkpoint for the S phase?
No errors in the cell replication.
What is the G2 phase of the cell cycle?
The 3rd phase of the cell cycle, continues to grow the cell and prepares the cell for division.
What are the checkpoints for the G2 phase?
The cell has a complete set of chromosomes and enough cell components.
What is the M phase of the cell cycle?
The 4th phase of the cell cycle, cell division takes place.
What are the checkpoints for the M phase?
The sister chromatids are attached to the spindle fibers.
What 3 steps of the cell cycle are a part of interphase?
G1, S, and G2
What do stimulatory proteins do?
They continue the cell cycle
What are some examples of stimulatory proteins?
Growth factors, APC/C, CDKs, Cyclins, and proto-oncogenes
What do inhibitory proteins do?
They stop the cell cycle and/or prevent activation
What are some examples of inhibitory proteins?
MAD, BRCA1, ATM, Rb, p53, and tumor suppressors
