Question 7
(a) Name four involuntary actions in humans. [4 marks]
(b) State:
(i) two benefits of trying food items [2 marks]
(ii) two deficiency diseases of vitamin C [2 marks]
(c) Name two pests that could contaminate human food [2 marks]
Observation
This question was attempted by many candidates and their performance was very good. In part (a) candidates correctly named involuntary actions in humans. In part (b)(i) and (ii) candidates correctly state benefits of frying food items and deficiency diseases of vitamin C. In part (c) candidates correctly named pests that could contaminate human food.
The expected answers are as follows:
7(a) INVOLUNTARY ACTIONS IN HUMANS
- sneezing
- sleeping
- coughing
- blinking
- yawning
- knee jerk
- breathing
(b)(i) BENEFITS OF FRYING FOOD ITEMS
- to change taste/make it delicious
- prolong shelf life/preservation
- makes food attractive/appetizing when hot
- a quick method of cooking
(ii) DEFICIENCIES OF VITAMIN C
- swollen/aching joints
- bleeding gums/loose teeth/scurvy
- diseases infection/delay in wound healing
(c) PESTS THAT COULD CONTAMINATE HUMAN FOOD
- housefly
- cockroach