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17 Cards in this Set
- Front
- Back
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What is cell division? |
The process in which 1 cell divides into 2 identical copies of the parent cell. |
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What is G1 phase? |
G1 phase is the phase where the cells grow and are actively doing their specific jobs. |
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What is G0 phase? |
G0 phase is the phase mature cells will enter when they are no longer preparing to divide, but are still active. |
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When does the cell cycle occur? |
Interphase. |
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What are the 3 stages of interphase? |
G1, S, and and G2. |
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What does G1 phase end with? |
a restriction checkpoint. |
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What are 4 requirements of a checkpoint? |
1. Nutrients are sufficient 2. Growth factors are present 3. Size is adequate 4. DNA is undamaged |
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What are the 4 options for a cell at a checkpoint? |
1. Entered in G0 phase (resting mature phase) 2. Cell will remain at checkpoint until requirements are met 3. Proceed to S phase if requirements are met 4. Apoptosis (if DNA is damaged) |
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What is apoptosis? |
It is the process of a cell self destruction. |
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In what phase does DNA replication occur? |
S phase |
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What are centrosomes? |
Structures are consist of 2 centrioles together |
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What are centrioles? |
Small cylindrical structures near the nucleus that act as a microtubule hub for the cell |
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What occurs in G2 phase? |
The cell continues to grow and produce protein and the cell organizes itself for mitosis and cell division |
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What are the requirements for the G2 checkpoint? |
-Chromosome replication successful done -No DNA damage |
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Where are the checkpoints in interphase? |
1. End of G1 2.G2 |
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What are the 6 stages of mitosis (in order) |
1. Prophase 2. Prometaphase 3. Metaphase (CHECKPOINT) 4. Anaphase 5. Telophase 6. Cytokinesis |
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How could a cell passes the metaphase checkpoint? |
If all chromosomes are attached to the mitotic spindle fibres. |
