Podcast
Questions and Answers
What role does the cell cycle control system play in the cell cycle?
What role does the cell cycle control system play in the cell cycle?
- It serves solely to enhance metabolic activity.
- It functions independently of internal and external controls.
- It regulates the sequential events of the cell cycle. (correct)
- It dictates the exact timing of cell division.
Which checkpoint is considered the most important for many cells?
Which checkpoint is considered the most important for many cells?
- M checkpoint
- G2 checkpoint
- G1 checkpoint (correct)
- S checkpoint
What happens to a cell if it does not receive a go-ahead signal at the G1 checkpoint?
What happens to a cell if it does not receive a go-ahead signal at the G1 checkpoint?
- It initiates cellular repair mechanisms.
- It exits the cycle and enters the G0 phase. (correct)
- It enters the G2 phase.
- It immediately divides into two daughter cells.
At what point does the cell cycle stop waiting for a signal?
At what point does the cell cycle stop waiting for a signal?
What is the primary function of internal and external controls in the cell cycle?
What is the primary function of internal and external controls in the cell cycle?
Flashcards
Cell Cycle Control System
Cell Cycle Control System
A system that regulates the sequential events of the cell cycle, acting like a clock.
Checkpoints
Checkpoints
Specific points in the cell cycle where the cycle stops until a go-ahead signal is received.
G1 checkpoint
G1 checkpoint
A crucial checkpoint in the cell cycle where the cell receives a go-ahead signal.
G0 phase
G0 phase
Signup and view all the flashcards
Cell Cycle
Cell Cycle
Signup and view all the flashcards
Study Notes
Cell Cycle Control System
- Cell cycle events are directed by a cell cycle control system, acting like a clock.
- This system is regulated by internal and external controls.
- Checkpoints exist in the cell cycle where the cycle halts until a go-ahead signal is received.
G1 Checkpoint
- Crucial checkpoint for many cells.
- If a cell receives a go-ahead signal at the G1 checkpoint, it proceeds through S, G2, and M phases and divides.
- Lack of a go-ahead signal leads to the cell exiting the cycle and entering a non-dividing G0 phase.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
