Cambridge AS & A Level Biology
5.1Replication and division of nuclei and cells
Replication and division of nuclei and cells in Cambridge AS & A Level Biology: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic41 practice questions2 lessons
Learning objectives
What the syllabus expects you to be able to do.
- 5.1.1Describe chromosome structure: DNA, histones, sister chromatids, centromere and telomeres.
- 5.1.2Explain the importance of mitosis in growth, replacement, repair and asexual reproduction.
- 5.1.3Outline the mitotic cell cycle: interphase (G1, S, G2), mitosis and cytokinesis.
- 5.1.4Outline how telomeres prevent loss of genes during DNA replication.
- 5.1.5Outline the role of stem cells in cell replacement and tissue repair.
- 5.1.6Explain how uncontrolled cell division can produce a tumour.
Lessons
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Chromosomes and the cell cycle
30 min
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Uncontrolled cell division and cancer
30 min
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Sample question
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