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Question 18M.1.HL.TZ1.22

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.1.HL.TZ1.22
Level HL Paper 1 Time zone TZ1
Command term Question number 22 Adapted from N/A
22.
[Maximum mark: 1]
18M.1.HL.TZ1.22

Mucus traps pathogenic bacteria. Mucus also attracts viruses that attack pathogenic bacteria.

[Source: EYE OF SCIENCE/SCIENCE PHOTO LIBRARY]

What part of the immune system do these viruses resemble in their function?

A. Antigens

B. Antibodies

C. Memory cells

D. Antibiotics

[1]

Markscheme

B