Cambridge IGCSE Biology practice

Paper 4 structured question: Blood

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Paper

Marks

Topic

Blood

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Paper 4Theory (Extended)2 marks

The immune system uses different types of white blood cells to protect the body from infection.

Description

Lymphocytes produce antibodies that bind to pathogens. Phagocytes engulf pathogens by phagocytosis, digesting them inside the cell.

a
State the role of lymphocytes in the immune response.
Your answer
Aim for approximately 1 distinct marking point.
[1]
b
State the role of phagocytes in defending the body.
Your answer
Aim for approximately 1 distinct marking point.
[1]

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Paper 4Theory (Extended)4 marks

Description

Lymphocytes produce antibodies that bind to specific pathogens. Phagocytes engulf and digest pathogens by phagocytosis.

a
Identify the function of antibodies produced by lymphocytes.
Your answer
Aim for approximately 2 distinct marking points.
[2]
b
Identify how phagocytes remove pathogens from the body.
Your answer
Aim for approximately 2 distinct marking points.
[2]