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Interpret photomicrographs and diagrams of cells in different stages of meiosis and identify the main stages of meiosis
1 Answer Describe the behaviour of chromosomes in plant and animal cells during meiosis and the associated behaviour of the nuclear envelope, the cell surface membrane and the spindle (names of the main stages of meiosis, but not the sub-divisions of prophase I, are expected: prophase I, metaphase I, anaphase I, telophase I, prophase II, metaphase II, anaphase II and telophase II)
1 Answer Explain the need for a reduction division during meiosis in the production of gametes
1 Answer Explain what is meant by homologous pairs of chromosomes
1 Answer Explain the meanings of the terms haploid (n) and diploid (2n)
1 Answer Describe the role of gibberellin in the germination of barley
1 Answer Explain the role of auxin in elongation growth by stimulating proton pumping to acidify cell walls
1 Answer Describe the rapid response of the Venus fly trap to stimulation of hairs on the lobes of modified leaves and explain how the closure of the trap is achieved
1 Answer Explain the sliding filament model of muscular contraction including the roles of troponin, tropomyosin, calcium ions and ATP
1 Answer Describe the ultrastructure of striated muscle with reference to sarcomere structure using electron micrographs and diagrams
1 Answer
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