Question 4
- State two deficiency of sodium in humans.
[2 marks]
- Mention the food substances which each of the following digestive enzymes act upon in humans
- ptyalin.
- pepsin
[42marks]
Observation
This question was attempted by many candidates and their performance was poor. In part (a) some candidates did not answer it correctly, having difficulty in spellings. In part (b) they did fair in it.
The expected answers are as follows
-
- dehydration.
- oedema.
- muscle cramp.
- kidney failure.
- hyponatremia.
- hypotension/low blood pressure.
Deficiencies of sodium in humans
-
Name food substances the following enzymes act on
- ptyalin – cooked starch/named.
- pepsin – proteins/named.