Chapter 3: Biological Molecules

A-level BiologyModule 2: Foundations8 topicsHigher

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Biological Molecules: Long Answer Questions

Examiner-style long-answer practice with automatic marking, improvement advice and ProofCoach tracking.

4 questions15 marks38 min

standard / hard / synoptic

2 marksdefinestandardOCR A

Define or identify the key idea in carbohydrates, then explain why it matters in Biological Molecules.

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3 marksexplainstandardOCR A

Proof Academy original experimental data

Condition	Measurement 1	Measurement 2	Mean
A	12.4	12.8	12.6
B	18.1	17.7	17.9
C	24.6	24.2	24.4

Using the stimulus where appropriate, explain the pattern or process involving lipids in Biological Molecules.

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4 marksanalysehardOCR A

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Analyse how proteins affects the outcome in Biological Molecules. Include any relevant calculation, condition, diagram feature, or limitation.

State the relevant principle for proteins.
Apply it to the data, diagram, or named example.
Give a justified conclusion.

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6 marksevaluatesynopticOCR A

Original clean exam diagram

thin barrierlarge surfaceblood supply

Evaluate the biological explanation for water and inorganic ions in Biological Molecules. Your answer should be coherent, use precise exam-board terminology, and consider both method and evidence.

State the relevant principle for water and inorganic ions.
Apply it to the data, diagram, or named example.
Give a justified conclusion.

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2. Basic Components of Living Systems

4. Enzymes

Key learning objectives

Understand the key principles behind Biological Molecules.
Apply these ideas to exam-style questions.
Recall the essential definitions and key terms.

Condition

Measurement 1

Measurement 2

Mean

12.4

12.8

12.6

18.1

17.7

17.9

24.6

24.2

24.4