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BLG1501 Assignment
2 (COMPLETE
ANSWERS) Semester
1 2025 (225234) -
DUE 11 April 2025
[Type the document subtitle]
[Pick the date]
Question 1 [20]1.1 Explanatory Notes on the Greenhouse Effect (7) The
greenhouse effect is a natural process that warms the Earth's surface. When
sunlight reaches the Earth, some of it is absorbed and re-emitted as infrared
radiation (heat). Greenhouse gases (GHGs) such as carbon dioxide (CO2),
, Exam (elaborations)
BLG1501 Assignment 2 (COMPLETE
ANSWERS) Semester 1 2025 (225234) - DUE
11 April 2025
BaBiology (BLG1501)
Institution
University Of South Africa (Unisa)
Book
Basic Biology
BLG1501 Assignment 2 (COMPLETE ANSWERS) Semester 1 2025 (225234) -
DUE 11 April 2025; 100% TRUSTED Complete, trusted solutions and
explanations.. Ensure your success with us. ...
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)
Question 1 [20]
1.1 Explanatory Notes on the Greenhouse Effect (7) The greenhouse effect is a natural process
that warms the Earth's surface. When sunlight reaches the Earth, some of it is absorbed and re-
emitted as infrared radiation (heat). Greenhouse gases (GHGs) such as carbon dioxide (CO2),
methane (CH4), water vapor (H2O), and nitrous oxide (N2O) trap this heat in the atmosphere,
BLG1501 Assignment
2 (COMPLETE
ANSWERS) Semester
1 2025 (225234) -
DUE 11 April 2025
[Type the document subtitle]
[Pick the date]
Question 1 [20]1.1 Explanatory Notes on the Greenhouse Effect (7) The
greenhouse effect is a natural process that warms the Earth's surface. When
sunlight reaches the Earth, some of it is absorbed and re-emitted as infrared
radiation (heat). Greenhouse gases (GHGs) such as carbon dioxide (CO2),
, Exam (elaborations)
BLG1501 Assignment 2 (COMPLETE
ANSWERS) Semester 1 2025 (225234) - DUE
11 April 2025
BaBiology (BLG1501)
Institution
University Of South Africa (Unisa)
Book
Basic Biology
BLG1501 Assignment 2 (COMPLETE ANSWERS) Semester 1 2025 (225234) -
DUE 11 April 2025; 100% TRUSTED Complete, trusted solutions and
explanations.. Ensure your success with us. ...
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)
Question 1 [20]
1.1 Explanatory Notes on the Greenhouse Effect (7) The greenhouse effect is a natural process
that warms the Earth's surface. When sunlight reaches the Earth, some of it is absorbed and re-
emitted as infrared radiation (heat). Greenhouse gases (GHGs) such as carbon dioxide (CO2),
methane (CH4), water vapor (H2O), and nitrous oxide (N2O) trap this heat in the atmosphere,
