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2.2 Animal tissues, organs and organ systems

2.2 Animal tissues, organs and organ systems

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Question 22

A physiologist is studying the efficiency of starch breakdown by salivary amylase under different pH conditions. After incubation, they obtain a series of reaction mixtures.

Describe the laboratory tests, including positive color changes and critical conditions, required to:

a.

Confirm the persistence of undigested starch in a reaction mixture.

[2]
b.

Demonstrate the release of reducing sugars (such as maltose) from the starch.

[3]
Markscheme

2.2 Animal tissues, organs and organ systems Questions

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

44 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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