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2.2 Animal tissues, organs and organ systems

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Question 51
F

A heart valve has become stiff, so it does not open fully. What is the effect on the person?

[1]
A

Less blood is pumped out of the heart, so less oxygen reaches the body

B

Blood flows backwards through the valve, so less oxygen reaches the body

C

More blood is pumped out of the heart, so more oxygen reaches the body

D

Blood enters the heart more quickly, so more oxygen reaches the body

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2.2 Animal tissues, organs and organ systems Questions

  1. GCSE
  2. /Biology
  3. /2.2 Animal tissues, organs and organ systems

179 exam-style questions on AQA GCSE Biology 2.2 Animal tissues, organs and organ systems, covering 2.2.1 The human digestive system, 2.2.2 The heart and blood vessels, 2.2.3 Blood, 2.2.4 Coronary heart disease: a non-communicable disease, 2.2.5 Health issues, 2.2.6 The effect of lifestyle on some non-communicable diseases, and 2.2.7 Cancer. Each one has a worked solution and a mark scheme showing where the marks go.

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