The document contains information about the human digestive system and nutrition. It includes diagrams labeling parts of the digestive system and describing their functions. It also contains tables about caloric values of different foods and average daily energy requirements for different age groups. An experiment is described that aims to show starch digestion in the mouth and small intestine by testing for the presence of starch and glucose over time.

1. Prepared by Pn Nursabiha
NAME:…………………………………………………… CLASS:………………………
NUTRITION
1. Diagram 1 shows part of the human digestive system.
(a) Label structures P, Q and R using the following words.
Pancreas Liver Oesophagus
[3 marks]
(b) (i) Name the enzyme that is found in X.
……………………………………………………………………………….............................
[1 mark]
(ii) State the function of the enzyme in b (i).
…………………………………………………………………………………………………….
[1 mark]
(c) State the function of R.
………………………………………………………………………………………………………
[1 mark]
(d) Name the process by which food is moved along P.
………………………………………………………………………………………………………
[1 mark]
P: …………………………….
X
Diagram 1
Q: …………………………….
R: …………………………….

2. Prepared by Pn Nursabiha
2. Diagram 2 shows some parts of the digestive system.
(a) Name the following parts:
K : ………………………………
L : ……………………………….
M : ……………………………….
N : ……………………………….
[4 marks]
(b) What is stored in the part labelled K? Where is it produced?
…………………………………………………………………………………………………….
[2 marks]
(c) Digestion of food ends in part L. State the end products of digestion for:
(i) Carbohydrates : …………………………………………………………………………..
(ii) Protein : ………………………………………………………………………….
(iii) Fats : ………………………………………………………………………….
[3 marks]
N
M
L
K
Diagram 2

3. Prepared by Pn Nursabiha
3. Diagram 3 shows the classes of food. Complete Diagram 3.
(a) Name the classes of food in Diagram 3.
[4 marks]
(b) Draw lines to show the correct match between the class of food and its function.
[3 marks]
Class of Food
Water
Fats
Vitamins
Diagram 3
Carbohydrate
Fibre
Mineral
Protein
Class of food
To supply energy
To prevent constipation
To build new cells
Function

4. Prepared by Pn Nursabiha
4. Diagram 4.1 shows the average energy requirement for different groups of people.
(a) Based on Diagram 4.1, state the average energy required per day for:
(i) Babies : …….…………………………………………………. ……………………….
(ii) Male adults : …………………………………………………………………………
[2 marks]
(b) Who requires the most energy?
…………………….………………………………………………………………………………
[1 mark]
(c) Table 4.2 shows the calorific value of certain food.
Food Quantity Calorific (kJ)
Fried rice 1 plate 2675
Coffee 1 cup 294
Kuih koci 1 piece 344
Banana 1 fruit 378
Table 4.2
Babies
Children
Adolescentboys
Adolescentgirls
Maleadults
adults
Femaleadults
adults
0
2000
4000
6000
8000
10000
12000
14000
16000
18000
20000
Average energy required per day
kilo/joule
e
Diagram 4.1

5. Prepared by Pn Nursabiha
Calculate the calorific value of the following meal by referring to Table 1.
Fried rice
Kuih koci
Banana
Coffee
1 plate
1 piece
2 fruits
1 cup
[2 marks]
5. An experiment has been carried out as shown in Diagram 5. Some distilled water from each
boiling tube A and B is tested for starch and glucose respectively at the beginning and after
20 minutes.
Diagram 5

6. Prepared by Pn Nursabiha
(a) What is the aim of the experiment?
……………………………………………………………………………………………………….
[1 mark]
(b) Complete the table below based on the experiment..
Boiling tube
A
( Test for Starch )
B
(Test for glucose)
Beginning of experiment Absent Absent
After 20 minutes
[2 marks]
(c) What can be inferred from the results in 5 (b).
………………………………………………………………………………………………………
………………………………………………………………………………………………………
[2 marks]
(d) State the variables in the experiment.
(i) Manipulated variable :…………………………………………………………………
(ii) Responding variable : …………………………………………………………………
(iii) Control variable : …………………………………………………………………
[3 marks]
(e) Name the reagent used to test for the presence of
(i) Starch : ………………………………………………………………………………….
(ii) Glucose : ……………………………………………………………………………………
(f) Which part of the alimentary canal is represented by the:
(i) Visking tube : …………………………………………………………………………
(ii) Distilled water : …………………………………………………………………………
[2 marks]