DP Chemistry (first assessment 2025)

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Question 23M.2.HL.TZ1.18a

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Date May 2023 Marks available [Maximum mark: 2] Reference code 23M.2.HL.TZ1.18a
Level HL Paper 2 Time zone TZ1
Command term Explain Question number a Adapted from N/A
a.
[Maximum mark: 2]
23M.2.HL.TZ1.18a
(a)

Explain two ways antiviral medications prevent the replication of viruses.

[2]

Markscheme

Any two of:
«bind to receptors to» prevent virus entering cell ✓
alter genetic material of cell/cytoplasm «to prevent replication» ✓
block enzyme activity in cell «to prevent replication» ✓
prevent virus leaving cell «by inhibiting viral enzyme/neuraminidase» ✓