객관식
Which two main stages make up the eukaryotic cell cycle?
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11. Cell Division
Introduction to the Cell Cycle
객관식
Which phase of the cell cycle is primarily responsible for the replication of DNA in eukaryotic cells?
A
S phase
B
G1 phase
C
G2 phase
D
M phase
검증된 단계별 안내1
Understand the cell cycle: The cell cycle is divided into several phases: G1 (Gap 1), S (Synthesis), G2 (Gap 2), and M (Mitosis). Each phase has a specific role in cell growth and division.
Focus on DNA replication: DNA replication is the process by which a cell duplicates its DNA to ensure that each daughter cell receives an identical copy of the genetic material.
Identify the phase responsible for DNA replication: The S phase (Synthesis phase) is the part of the cell cycle where DNA replication occurs. During this phase, the entire genome is duplicated.
Differentiate the other phases: G1 phase is primarily for cell growth and preparation for DNA replication. G2 phase involves preparation for mitosis, including protein synthesis and organelle duplication. M phase is where mitosis and cytokinesis occur, leading to cell division.
Conclude that the S phase is the correct answer: Based on the roles of each phase, the S phase is the phase of the cell cycle responsible for DNA replication in eukaryotic cells.
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