Cambridge IGCSE Biology practice

Paper 3 structured question: Sexual reproduction in humans

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Paper

Marks

Topic

Sexual reproduction in humans

Exam-style question

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Paper 3Theory (Core)3 marks

Sperm cells have specialized structures that enable them to reach and fertilize an egg.

Description

The sperm cell has a flagellum, many mitochondria in the midpiece, and an acrosome containing enzymes.

a
State the function of the flagellum in a sperm cell.
Your answer
Aim for approximately 1 distinct marking point.
[1]
b
Explain how mitochondria in the sperm cell support its function.
Your answer
Aim for approximately 2 distinct marking points.
[2]

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Paper 3Theory (Core)3 marks

Description

The acrosome is a cap-like structure on the sperm head containing enzymes.

a
Identify the substance contained in the acrosome.
Your answer
Aim for approximately 1 distinct marking point.
[1]
b
Explain how the enzymes in the acrosome assist fertilization.
Your answer
Aim for approximately 2 distinct marking points.
[2]