# Describe the structural features of a sperm cell and explain how each feature is related to its function in sexual reproduction.

> Cambridge International IGCSE Biology (0610) — 16.2 Sexual reproduction · Describe · 4 marks

## Mark scheme (4 marks)

1. The sperm cell has a haploid nucleus (in the head), which means it carries half the chromosome number so that fertilisation restores the full diploid chromosome number.
2. The midpiece contains many mitochondria, which provide energy (from respiration) for the movement of the flagellum / tail.
3. The flagellum (tail) allows the sperm cell to swim / move towards the egg cell.
4. The head contains an acrosome, which releases enzymes to digest / penetrate the jelly coat of the egg cell, allowing fertilisation to occur.

## Key terms

- [sperm cell](https://www.gradenine.co.uk/glossary/sperm-cell)

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Source: [GradeNine](https://www.gradenine.co.uk/q/describe-the-structural-features-of-a-eb0ef4de) · Published by Druglandscape Ltd.