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Multiple Choice
During which phase of the cell cycle do cells duplicate their organelles to prepare for division?
A
M phase
B
G2 phase
C
G1 phase
D
S phase
Verified step by step guidance
1
Understand the cell cycle: The cell cycle consists of several phases that a cell goes through to divide and produce new cells. These phases include G1, S, G2, and M phases.
Identify the purpose of each phase: The G1 phase is the first gap phase where the cell grows and carries out normal functions. The S phase is where DNA replication occurs. The G2 phase is the second gap phase where the cell prepares for mitosis. The M phase is where mitosis and cytokinesis occur.
Focus on the G1 phase: During the G1 phase, the cell increases in size and synthesizes mRNA and proteins necessary for DNA synthesis. It is also during this phase that the cell duplicates its organelles to prepare for division.
Differentiate between organelle duplication and DNA replication: Organelles are duplicated during the G1 phase, while DNA replication occurs during the S phase.
Conclude that the G1 phase is responsible for organelle duplication: Based on the functions of each phase, the G1 phase is when cells duplicate their organelles in preparation for cell division.