Two test‑tubes were set up and left for 10 minutes. • Test‑tube 1 contained a mixture of starch suspension and amylase solution. • Test‑tube 2 contained a mixture of starch suspension and pepsin solution. After 10 minutes, Benedict’s solution was added to both test‑tubes and they were heated. Predict and explain the expected results for test‑tube 1 and test‑tube 2.

Answer

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2(b)CarbohydratesEasy1 mark

Starch is a carbohydrate. State the elements that are in all carbohydrates.

Three answers required.

2(c)CarbohydratesEasy2 marks

Table 2.1 shows some information about large molecules and the smaller molecules they are made from. Complete Table 2.1.

large molecule	small molecules
glycogen	Table answer glycogen_small molecules
cellulose	Table answer cellulose_small molecules
Table answer amino-acids_large molecule	amino acids
Table answer fatty-acids_large molecule	fatty acids and glycerol

2(d)Human Nutrition DigestionMedium2 marks

Compare the process of assimilation with the process of absorption.

Answer

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