The longest stage of the cell cycle is _____.

• A. mitosis
• B. G\(_0\) phase
• C. interphase
• D. cytokinesis

Answer: (C)

Verified step by step guidance

1. Understand the cell cycle: The cell cycle is divided into several stages, including interphase, mitosis, and cytokinesis. Interphase itself is subdivided into G\(_1\), S, and G\(_2\) phases, where the cell grows, replicates its DNA, and prepares for division.
2. Recognize the role of interphase: Interphase is the stage where the cell spends the majority of its time. It is focused on growth and preparation for division, making it the longest stage of the cell cycle.
3. Compare interphase with other stages: Mitosis and cytokinesis are much shorter processes compared to interphase. Mitosis involves the division of the nucleus, while cytokinesis involves the division of the cytoplasm to form two daughter cells.
4. Understand G\(_0\) phase: The G\(_0\) phase is a resting state where cells exit the cycle and do not divide. While some cells may remain in G\(_0\) for extended periods, it is not considered part of the active cell cycle.
5. Conclude that interphase is the correct answer: Based on the information above, interphase is the longest stage of the cell cycle, as it encompasses the majority of the cell's activities leading up to division.