Podcast
Questions and Answers
What signals the beginning of mitotic cell division if the DNA has been correctly replicated?
What signals the beginning of mitotic cell division if the DNA has been correctly replicated?
- Cyclin Dependent Kinases (CDKs) (correct)
- Telomerase
- Cyclin Inhibitors (CKIs)
- DNA Polymerase
What is the main function of the G2 checkpoint?
What is the main function of the G2 checkpoint?
- To repair damaged DNA
- To signal the completion of DNA replication
- To initiate mitotic cell division
- To ensure accurate replication of all chromosomes (correct)
What happens if the G2 checkpoint detects problems with the DNA?
What happens if the G2 checkpoint detects problems with the DNA?
- The cell skips the mitotic phase
- The cell undergoes apoptosis
- The cell cycle is halted for DNA replication or repair (correct)
- The cell immediately enters into mitotic phase
When does the G2 checkpoint prevent the cell from entering into the mitotic phase?
When does the G2 checkpoint prevent the cell from entering into the mitotic phase?
What is the main role of the G2 checkpoint in the cell cycle?
What is the main role of the G2 checkpoint in the cell cycle?
When do cyclin dependent kinases (CDKs) signal the beginning of mitotic cell division?
When do cyclin dependent kinases (CDKs) signal the beginning of mitotic cell division?
What happens if the G2 checkpoint detects problems with the DNA?
What happens if the G2 checkpoint detects problems with the DNA?
Study Notes
Cell Cycle Checkpoints
- The G2 checkpoint ensures that the DNA is correctly replicated before entering mitotic cell division.
G2 Checkpoint Function
- The main function of the G2 checkpoint is to verify DNA integrity before the cell enters the mitotic phase.
G2 Checkpoint Response to DNA Damage
- If the G2 checkpoint detects problems with the DNA, it prevents the cell from entering the mitotic phase.
- This pause allows for DNA repair mechanisms to correct the damage before proceeding.
CDKs and Mitotic Cell Division
- Cyclin-dependent kinases (CDKs) signal the beginning of mitotic cell division if the DNA has been correctly replicated.
G2 Checkpoint Role in the Cell Cycle
- The main role of the G2 checkpoint is to ensure that the cell has a complete and accurate set of chromosomes before entering mitotic cell division.
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Description
Test your knowledge about the G2 checkpoint in the cell cycle, which ensures accurate replication of chromosomes and checks for DNA damage before entering mitosis. Learn about the conditions that must be met for cells to proceed to the mitotic phase and the mechanisms involved when DNA problems are detected.
