ZIMSEC A-Level Biology Paper 3 November 2021 Question Paper

About this question paper

This is the ZIMSEC A-Level Biology question paper for Paper 3 from November 2021. Use it for exam practice under timed conditions. The paper code is 6030/3.

Other years: Biology A-Level

• 2020 Paper 1 November Question Paper1.3 MB
• 2022 Paper 1 November Question Paper382 KB
• 2020 Paper 3 November Question Paper399 KB
• 2023 Paper 2 November Question Paper2.4 MB
• 2023 Paper 1 November Question Paper3.3 MB
• 2023 Paper 3 November Question Paper716 KB
• 2024 Paper 2 November Question Paper1.6 MB
• 2018 Paper 1 June Question Paper309 KB

Text from the first page

2
1
(c) Using a table, distinguish between starch and glycogen.
(a) Describe the production of ATP by oxidative phosphorylation.
(b) Relate the following properties of water to their importance to living organisms:
(i) transparent
(ii) high heat of vapourisation
(iii) ice is less dense than liquid water

[8]
[2]
[2]
[2]
(c) Using a table, distinguish between starch and glycogen.
(a) Describe the behaviour of chromosomes during prophase of meiosis 1

[6]
2
3
4
5
6
7
(b) Explain, using one example, the effect of mutations on the phenotype.

[8]
[6]
(c) Distinguish between DNA replication and DNA transcription.

[6]
(a) Describe the fixation of carbon dioxide in C4 plants.

[8]
(b) Relate the structure of a mitochondrion to its function.

[6]
(c) Discuss the need for genetic counselling in genetic screening.

[6]
(a) Describe the effects of deforestation on ecosystems.

[8]
(b) Distinguish between eukaryotic and prokaryotic cells.

[6]
(c) Explain the biological advantages of using human insulin from gene technology.

[6]
(a) Describe how an action potential is generated.

[8]
(b) Compare, using a table, the structure of an artery and a vein.

[6]
(c) Explain any three long-term benefits of exercise to the cardiovascular system.

[6]
(a) Describe the development of a plant embryo sac into an ovule.

[8]
(b) Explain any three risks of abortion.

[6]
(c) Explain how the structure of the placenta is adapted for exchange of materials between maternal and foetal blood.

[6]
(a) Describe the importance of Kingdom Plantae.

[8]
(b) Suggest any six reasons for maintaining biodiversity.

[6]
(c) Explain the importance of elephants in a natural ecosystem.

[6]
6030/3 N2021