A-LevelBiologyTransport in mammals9700/12 · Oct/Nov 2016 · Q321 Mark

The graph shows the pressure in three parts of the heart during one cycle. At 0.2 seconds, which part of the heart is responding to the excitatory stimulus? [Figure 32.1]

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ALeft atrium

BRight atrium

CLeft ventricle

DRight ventricle

✓ Correct answer

C: Left ventricle

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Topic: Transport in mammals, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Oct/Nov 2016 Paper 1 Variant 2, question 32.

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