Multiple Choice
Why is the DNA damage checkpoint in the G1 phase important in cell cycle regulation?
328
views
11. Cell Division
Cell Cycle Regulation
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following best describes the primary function of cell cycle checkpoints?
A
They synthesize proteins required for mitosis.
B
They monitor and verify whether the processes at each phase of the cell cycle have been accurately completed before progression to the next phase.
C
They promote uncontrolled cell division.
D
They initiate DNA replication during the S phase.
Verified step by step guidance1
Understand the concept of cell cycle checkpoints: These are control mechanisms in eukaryotic cells that ensure the accuracy and proper progression of the cell cycle.
Identify the phases of the cell cycle: The cell cycle consists of interphase (G1, S, G2) and mitotic phase (M). Checkpoints are located at key transition points, such as G1/S, G2/M, and during mitosis.
Clarify the role of checkpoints: Their primary function is to monitor and verify whether critical processes, such as DNA replication and chromosome alignment, have been accurately completed before the cell progresses to the next phase.
Eliminate incorrect options: For example, checkpoints do not synthesize proteins for mitosis, promote uncontrolled cell division, or initiate DNA replication during the S phase. These are distinct processes unrelated to the monitoring function of checkpoints.
Conclude that the correct description of cell cycle checkpoints is: 'They monitor and verify whether the processes at each phase of the cell cycle have been accurately completed before progression to the next phase.'
Related Videos
Related Practice
Cell Cycle Regulation practice set
Problem sets built by lead tutorsExpert video explanations