GCSE Biology Test: Nutrition and Digestion
1. A balanced diet includes carbohydrates, proteins and fats.
(a) Name two natural (not processed) sources of dietary carbohydrate.
(2)
(b) Give two uses of proteins in the body.
(2)
(c) Give two uses of fats in the body.
(2)
(d) Explain how you would test for the presence of sugar in a food.
(2)
8 marks
2. This diagram shows the digestive system in the human body.
(a) Name parts A to F (not X or Y).
(6)
(b) D contains a strong acid. What
is the purpose of this acid?
(1)
(c) What process takes place in B?
(1)
(d) Faeces leaves the body via
the anus. What is faeces?
(1)
9 marks
4. A food contains protein. Describe, in as much detail as you can, what happens to
this protein after the food reaches the stomach.
(5)
5 marks
5. (a) Name the enzyme that catalyses the digestion of dietary fats.
(1)
(b) Where is this enzyme produced?
(1)
(c) What are the products of fat digestion?
(1)
3 marks
6. Fill in the blanks (a) to (d), to complete this table on vitamins and minerals.
vitamin or mineral
Calcium
(b)
(c)
source
milk
red meat
oranges and lemons
deficiency disease
(a)
Anaemia
(d)
4 marks
GCSE Biology Test: Nutrition and Digestion
Mark Scheme
1.
(a)
(b)
(c)
(d)
2.
(a) A-liver,
B-large intestine,
D-stomach,
E-pancreas,
(b) to kill bacteria / to help digestive enzymes
(c) absorption of water
(d) undigested food / plant fibres
4.





cereals, fruits, root vegetables
growth, replacing cells
energy, making cell membranes
Benedicts solution; heat; turns green/orange/red
digested/broken down;
by protease enzymes;
from stomach/small intestine/pancreas;
into amino acids;
which are absorbed
(2)
(2)
(2)
(2)
8 marks
C-oesophagus/gullet,
F-small intestine/ileum
(6)
(1)
(1)
(1)
9 marks
(5)
5 marks
5.
(a) lipase
(b) pancreas / small intestine
(c) fatty acids and glycerol (both needed)
(1)
(1)
(1)
3 marks
6.
(a)
(b)
(c)
(d)
(1)
(1)
(1)
(1)
4 marks
rickets
iron
vitamin C
scurvy
Total
29 marks