Multiple Choice
How many femtograms of DNA are present in a human cell during the G2 phase of the cell cycle?
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3. Energy & Cell Processes
Introduction to the Cell Cycle
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Which of these processes occurs during a cell's first gap (G1) phase?
A
Chromosome segregation
B
DNA replication
C
Cell growth and increase in organelle number
D
Cytokinesis
Verified step by step guidance1
Understand the cell cycle phases: The cell cycle consists of interphase (G1, S, G2) and mitotic phase (M). The G1 phase is the first gap phase following mitosis.
Identify the activities in the G1 phase: During the G1 phase, the cell grows in size and synthesizes mRNA and proteins necessary for DNA replication. This is a period of cellular growth and increase in organelle number.
Differentiate between the processes: Chromosome segregation occurs during mitosis, DNA replication occurs in the S phase, and cytokinesis is the final step of cell division.
Focus on cell growth: In the G1 phase, the cell is primarily focused on growth and preparing for DNA replication, which involves increasing the number of organelles and cellular components.
Conclude with the correct process: The correct process occurring during the G1 phase is cell growth and increase in organelle number, as the cell prepares for the subsequent phases of the cell cycle.
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