Question 1
1. (a) (i) List four constituents of protein [4 marks]
(ii) State two functions of protein [2marks]
Observation
This question was attempted by majority of the candidates and their performance was fair.
In part (a)(i) most candidates answered it correctly, some had spellings issue. In part (a)(ii) majority of candidates were able to mention functions of protein.
The expected answers are as follows:
1. (a) (i) CONSTITUENTS OF PROTEIN
- carbon
- hydrogen
- oxygen
- nitrogen
- sulphur
- phosphorus
(ii) FUNCTIONS OF PROTEINS
- repair worn-out tissues
- building body cells/growth
- source of energy
- formation of hormones/enzymes
- formation of blood cells from amino acid/haemoglobin formation
- formation of chromosomes