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BLG1501 Assignment 2 Semester 1 Memo | Due 11 April 2025. All questions answered. Question 1 [20]
1.1 Write explanatory notes on the greenhouse effect. (7)
1.2 Distinguish between hypertonic, hypotonic, and isotonic solutions. (6)
1.3 Explain how edges and corridors can strongly influence landscape biodiversity. (7)
Question 2 [28]
2.1 Compare in tabulated form the processes of fermentation and cellular
respiration. (10)
2.2 Tabulate the key differences between mitosis and meiosis. (12)
2.3 Define predation, herbivory and parasitism. (6)
Question 3 [32]
3.1 In sesame plants, the one-pod condition (P) is dominant to the three-pod condition
(p). Normal leaf (L) is dominant to wrinkled leaf (l). A homozygote in one-pod
condition and normal leaves are crossed with a homozygote in three-pod condition
and wrinkled leaves. Use a Punnett square to predict the phenotypic and
genotypic ratios of the F2 generation. (20)
3.2 List the four major threats to biodiversity and give an example of each. (12)
Question 4 [20]
4.1 Explain the difference between cytokinesis in plant and animal cells. (6)
4.2 Distinguish between asexual and sexual reproduction. (4)
4.3 Explain the general process of transcription, including the three major steps of
initiation, elongation and termination. (10)
Total: 100 marks
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