CAIE A Level Biology 9700 · Biological molecules

Biological molecules: outline question

Outline5 marksStandard

Outline how you would test a solution for the presence of protein using the biuret test. Include in your answer the expected results for a negative control and a positive control.

0 words · 5 marks

No account needed for your first marks. Your answer is used only to mark it.

How this question is marked

5 marks, so the mark scheme is looking for about 5 separate creditworthy points. Making the same point twice in different words earns it once.

Outline means: Give the main points briefly. Less detail than describe, but every key step has to be there. One short line per step, in order. The marks are for coverage, not depth.

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