CAPE Biology Unit 2 · 2014 · Paper 1 · Question Q22
At which of the following stages are the heart sounds, 'lub' and 'dub' produced?
- (A)I and II
- (B)I and III
- (C)II and III
- (D)II and IV
This question uses a figure or table from the paper — you'll see it when you practise.
The answer is shown once you've answered.
Practise this question