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BLG1501 Assignment 2 (ANSWERS) Semester 1 2025 - DISTINCTION GUARANTEED

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Achieve a distinction with this comprehensive and well-organized set of BLG1501 Assignment 2 (ANSWERS) Semester 1 2025 - DISTINCTION GUARANTEED. Ensure accuracy and excellence in your submission!!!! I 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)

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BLG1501
Assignment 2 Semester 1 2025
Unique Number: 225234
Due Date: 11 April 2025
QUESTION 1

1.1

The greenhouse effect is a natural process that warms the Earth's surface. It occurs when
the sun's energy reaches the Earth in the form of sunlight, which is absorbed by the
surface and then radiated back into the atmosphere as heat. Some of this heat is trapped
by gases in the atmosphere known as greenhouse gases, which include carbon dioxide
(CO2), methane (CH4), water vapor (H2O), nitrous oxide (N2O), and ozone (O3). These
gases allow sunlight to enter the atmosphere but prevent the heat from escaping back into
space. As a result, the Earth's temperature rises, maintaining conditions suitable for life.

While the greenhouse effect is a necessary and natural process for life on Earth, human
activities, such as the burning of fossil fuels and deforestation, have increased the
concentration of these gases, particularly CO2. This leads to an enhanced greenhouse
effect, causing global temperatures to rise beyond natural levels, resulting in climate
change. The enhanced greenhouse effect is the primary driver of global warming and its


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