객관식
In which stage of the cell cycle is a cell immediately before mitosis (M phase) begins?
85
views
16. Cell Division
G1 Phase
객관식
In the context of the cell cycle during and after G1, what best describes the G0 phase?
A
The phase in which chromosomes condense and the nuclear envelope breaks down
B
A quiescent state in which cells exit the cell cycle, remain metabolically active, and do not replicate DNA unless they re-enter the cycle
C
A checkpoint-controlled phase in which sister chromatids separate and cytokinesis is completed
D
The phase in which DNA replication occurs prior to mitosis
검증된 단계별 안내1
Step 1: Understand the context of the cell cycle phases, especially focusing on what happens during and after the G1 phase.
Step 2: Recall that the G1 phase is a period of cell growth and preparation for DNA replication, which occurs in the subsequent S phase.
Step 3: Recognize that the G0 phase is a distinct state where cells exit the active cycle after G1 and do not proceed to DNA replication or division immediately.
Step 4: Note that cells in G0 are metabolically active but remain in a quiescent (non-dividing) state, meaning they do not replicate DNA unless they receive signals to re-enter the cycle.
Step 5: Differentiate G0 from other phases such as mitosis (where chromosomes condense and nuclear envelope breaks down) and S phase (where DNA replication occurs), confirming that G0 is best described as a resting or quiescent phase outside the active cycle.
관련 영상
관련 실천
