Multiple Choice
In the control of the cell cycle, how do cyclin-dependent kinases (CDKs) directly promote cell division?
35
views
16. Cell Division
Control of the Cell Cycle
Multiple Choice
In the context of control of the cell cycle, what is the primary purpose of cell cycle checkpoints?
A
To ensure that each phase is completed accurately and that damaged or unreplicated DNA is not passed to daughter cells
B
To increase the rate of cell division by shortening G1, S, and G2 phases
C
To prevent cells from ever entering the G0 phase
D
To initiate cytokinesis immediately after DNA damage is detected
Verified step by step guidance1
Understand that the cell cycle is a series of phases (G1, S, G2, and M) through which a cell passes to divide and produce daughter cells.
Recognize that cell cycle checkpoints are control mechanisms that monitor and verify whether the processes at each phase of the cell cycle have been accurately completed before progression to the next phase.
Identify the main checkpoints: the G1 checkpoint (checks for DNA damage before DNA replication), the G2 checkpoint (ensures DNA replication is complete and undamaged), and the M checkpoint (ensures proper chromosome alignment before mitosis).
Realize that the primary purpose of these checkpoints is to prevent the transmission of damaged or incomplete genetic material to daughter cells, thereby maintaining genomic integrity.
Conclude that the checkpoints do not function to speed up the cell cycle, prevent entry into G0, or immediately initiate cytokinesis after DNA damage, but rather to ensure accuracy and fidelity in cell division.
Related Videos
Related Practice
