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2.2 Animal tissues, organs and organ systems

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Question 45

Glandular tissue in the stomach releases hydrochloric acid. A company is choosing coatings for two edible capsules added to food. Capsule X contains living bacteria, and the full dose must reach the small intestine alive. Capsule Y contains stomach protease, which must be released at the pH it needs to work. Each coating can either open in the stomach, exposing its contents to hydrochloric acid, or remain sealed until it reaches the small intestine.

Choose the correct plan for the two capsule coatings.

[1]
A

Capsule X remains sealed until the small intestine, and capsule Y remains sealed until the small intestine.

B

Capsule X opens in the stomach, and capsule Y remains sealed until the small intestine.

C

Capsule X opens in the stomach, and capsule Y opens in the stomach.

D

Capsule X remains sealed until the small intestine, and capsule Y opens in the stomach.

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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

304 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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