ZIMSEC A-Level Biology 2024 Study Guide

About this study guide

This is the ZIMSEC A-Level Biology study guide for Paper 3 from November 2024. It is a free study guide for revision. The paper code is 6030/3.

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Text from the first page

2

1 (a) Describe each of the following bonds that hold protein molecules in shape:
(i) peptide
(ii) hydrogen
(iii) ionic
(iv) disulphide

[8]
(b) Explain the property of water which has a cooling effect in plants and animals.

[6]
(c) Relate the structure of the inner mitochondrial membrane to its function.

[6]

2 (a) Outline the functions, in the cell membrane, of
(i) proteins,

[4]
(ii) phospholipids.

[4]
(b) (i) Compare active transport and facilitated diffusion across cell membranes.

[3]
(ii) Explain the adaptations of cells to active transport.

[3]
(c) Distinguish between protozoa and algae.

[6]

3 (a) Describe the development of cancer.

[8]
(b) (i) Distinguish between cytokinesis in plant cells and animal cells.

[3]
(ii) Explain the significance of the genetic code being triplet.

[3]
(c) Relate the structure of a nucleotide to its function.

[6]

4 (a) Outline the functions, in DNA replication, of
(i) DNA helicase,

[1]
(ii) DNA polymerase,

[3]
(iii) DNA ligase,

[2]
(iv) DNA primase.

[2]
6030/3 N2024
Zimsec 2024
MATHS GUARDIOLA 0774382888
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