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CAIE A-Level Biology 2.1 Testing for Biological Molecules Question Bank

Practise biological-molecule test questions by matching reagents to observations, ordering sugar-test steps and interpreting Benedict colour standards.

Syllabus
2028–2030
Course
Biology 9700
Level
AS

Exam points

  • match reducing sugar, starch, lipid and protein tests to reagents and colour changes
  • order non-reducing sugar tests using acid hydrolysis, neutralisation and Benedict heating
  • use controlled Benedict comparisons, colour standards or timing to estimate sugar concentration

Covered syllabus points

2.1.1—Benedict's test for reducing sugars2.1.2—Iodine test for starch2.1.3—Emulsion test for lipids2.1.4—Biuret test for proteins2.1.5—Semi-quantitative Benedict's test2.1.6—Non-reducing sugar hydrolysis test

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