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2.2 Animal tissues, organs and organ systems

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Question 15
F

Food leaves the stomach at about pH 2 and enters the small intestine. Which statement explains why the pH of this food must be raised?

[1]
A

The enzymes of the small intestine are destroyed by any acid conditions

B

The enzymes of the small intestine work fastest in alkaline conditions

C

Bile is only able to emulsify lipids when the food is acidic

D

The products of digestion are only absorbed in acid conditions

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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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