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Theme D: Continuity and change

DNA replication and protein synthesis, cell division, inheritance, natural selection, homeostasis and climate change.

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Biology SLTheme D: Continuity and change
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21 original questions · 21 derived marking activities. Teaching explanations are AI-authored; independent teacher review is pending.

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Example question and marking points

Distinguish between the processes of mitosis and cytokinesis.

  1. States that mitosis is the division of the nucleus, in which replicated chromosomes are separated into two genetically identical sets.
  2. States that cytokinesis divides the cytoplasm to form separate daughter cells; it can begin before mitosis has finished.
  3. States that nuclear division without completed cytokinesis can leave one cell with two nuclei, whereas completed cytokinesis separates the daughter cells.

Check your reasoning: Mitosis divides the nucleus and cytokinesis divides the cytoplasm. They are distinct processes whose timing can overlap; animal cytokinesis commonly begins during late anaphase.

Original SubjectScout practice, not an official past-paper question. Independent teacher approval is pending.

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No. These are original SubjectScout practice questions for Theme D: Continuity and change. They are not official past-paper questions or endorsed material.

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