DP Biology (first assessment 2025)

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Question EXEX.1B.HL.TZ0.1aiii

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Date Example questions Example questions Marks available [Maximum mark: 1] Reference code EXEX.1B.HL.TZ0.1aiii
Level HL Paper 1B Time zone TZ0
Command term Suggest Question number iii Adapted from N/A
iii.
[Maximum mark: 1]
EXEX.1B.HL.TZ0.1aiii
(iii)

From the electron micrograph, suggest which viral particle P or Q is likely to have already infected a host cell.

[1]

Markscheme

viral particle Q
AND
has no contents/genetic material (as it has been inserted in the host cell)  

OR  
the capsid/ envelope/protein coat is open/cut showing that its contents have been inserted into the host (cell);  

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