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Multiple Choice
In an actively dividing eukaryotic cell, which part of the cell cycle is typically the longest?
A
Cytokinesis
B
M phase (mitosis and cytokinesis)
C
Interphase (G1, S, and G2)
D
Anaphase
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1
Understand the phases of the eukaryotic cell cycle: Interphase (which includes G1, S, and G2 phases) and M phase (which includes mitosis and cytokinesis).
Recall that Interphase is the period when the cell grows, duplicates its DNA, and prepares for mitosis, while M phase is when the cell actually divides.
Recognize that cytokinesis is the final step of M phase, where the cytoplasm divides to form two daughter cells.
Compare the duration of each phase: Interphase generally takes much longer because the cell is performing essential growth and DNA replication activities.
Conclude that among the options, Interphase (G1, S, and G2) is typically the longest part of the cell cycle in actively dividing eukaryotic cells.