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Date May 2012 Marks available 3 Reference code 12M.3.sl.TZ1.F1
Level SL Paper 3 Time zone TZ1
Command term Identify Question number F1 Adapted from N/A

Question

Most foods are complex mixtures and many components of them are nutrients.

Identify the types of nutrients A, B and C.

A     M12/4/CHEMI/SP3/ENG/TZ1/F1.b_1

B     M12/4/CHEMI/SP3/ENG/TZ1/F1.b_2

C     M12/4/CHEMI/SP3/ENG/TZ1/F1.b_3

[3]
b.

State the names of two types of nutrient other than those shown in part (b).

[2]
c.

Markscheme

A: protein / polypeptide/tripeptide;

B: carbohydrate / sugar / monosaccharide / glucose;

C: lipid / triglyceride / vegetable oil / fat;

b.

vitamins;

minerals;

water;

c.

Examiners report

This question was generally well answered by many candidates. Though most had a general idea of the difference between a food and a nutrient, many did not appreciate the distinction between an “unhealthy” food and one that isn’t a nutrient.

b.

This question was generally well answered by many candidates. Though most had a general idea of the difference between a food and a nutrient, many did not appreciate the distinction between an “unhealthy” food and one that isn’t a nutrient.

c.

Syllabus sections

Options » B: Biochemistry » B.2 Proteins and enzymes
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