A Levels Biology (9700)•9700/12/O/N/22
Explanation
Cell Cycle Processes in Diagram
Steps:
- Examine diagram for stages showing DNA duplication, chromosome separation, and cell splitting.
- Identify DNA replication in S phase where genetic material doubles.
- Recognize nuclear division (mitosis) with prophase to telophase chromosome movements.
- Confirm cytokinesis as cytoplasmic division forming two daughter cells.
Why B is correct:
- Cell cycle includes interphase (with DNA replication) and M phase (nuclear division via mitosis and cytokinesis), matching all three processes per standard eukaryotic division definition.
Why the others are wrong:
- A: Excludes cytokinesis, which completes cell separation.
- C: Omits DNA replication essential for chromosome duplication before division.
- D: Ignores DNA replication and cytokinesis, covering only mitosis.
Final answer: B
Topic: Replication and division of nuclei and cells
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