Sign In

Biology for IGCSE & O level - Human Nutrition (Section 3)

1
What is the function of the muscular contractions in the oesophagus?
Answer
(C)
To move food towards the stomach.
2
Which condition is associated with a deficiency in Vitamin D?
Answer
(B)
Rickets
3
What is the primary function of the villi in the small intestine?
Answer
(B)
To increase the surface area for absorption
4
Where does the digestion of proteins primarily begin?
Answer
(B)
Stomach
5
What are the products of fat digestion?
Answer
(C)
Fatty acids and glycerol
6
What are the finger-like projections in the small intestine called, which increase the surface area for absorption?
Answer
(B)
Villi
7
What is the main purpose of chemical digestion?
Answer
(A)
To break down large food molecules into smaller molecules.
8
What is the main process that occurs in the large intestine?
Answer
(C)
Absorption of water
9
What is the main function of the large intestine?
Answer
(A)
To absorb water.
10
Which of the following is/are an example of a food source rich in vitamin C?
Answer
A
B
11
What is the main enzyme found in saliva that begins the digestion of carbohydrates?
Answer
(B)
Amylase
12
What is the role of the pancreas in the digestive system?
Answer
(B)
To produce digestive enzymes and hormones.
13
What is the correct order of the digestive process for starch?
Answer
(A)
Mouth -> Stomach -> Small intestine
14
What is the process of breaking down food into smaller molecules called?
Answer
(C)
Digestion
15
Which part of the tooth contains the nerves and blood vessels?
Answer
(C)
Pulp cavity
16
Which of the following is NOT a source of fiber?
Answer
(D)
Meat
17
Where does the digestion of fats primarily take place?
Answer
(C)
Small intestine
18
Which of the following is produced by the liver and stored in the gallbladder?
Answer
(B)
Bile
19
Which vitamin is crucial for the absorption of calcium?
Answer
(C)
Vitamin D
20
What type of nutrient is primarily digested by lipase?
Answer
(C)
Fats
21
Which of the following are involved in the chemical digestion of food?
Answer
A
B
C
22
Which food group would you expect to find the most of the vitamins and minerals?
Answer
(C)
Fruits and vegetables
23
What is the role of the epiglottis during swallowing?
Answer
(A)
To prevent food from entering the trachea.
24
Which of the following enzymes does the pancreas secrete?
Answer
A
C
D
25
Which process involves the breakdown of large food molecules into smaller, simpler molecules?
Answer
(D)
Digestion
26
What is the role of the gallbladder in digestion?
Answer
(B)
To store bile
27
Which of the following enzymes is produced by the pancreas?
Answer
(B)
Amylase
28
What is the function of the epiglottis during swallowing?
Answer
(B)
To close the trachea.
29
What is the role of enzymes in the digestive system?
Answer
(B)
To break down large food molecules.
30
What is the function of amylase?
Answer
(C)
To digest carbohydrates.
31
What is the role of the pyloric sphincter?
Answer
(C)
To control the release of chyme into the duodenum.
32
Which organ secretes hydrochloric acid?
Answer
(B)
Stomach
33
What enzyme is responsible for breaking down starch into maltose in the small intestine?
Answer
(B)
Amylase
34
Which type of teeth are primarily used for grinding food?
Answer
(D)
Molars
35
In the stomach, what is the main function of pepsin?
Answer
(C)
To digest proteins
36
What does the term 'bolus' refer to in the digestive process?
Answer
(A)
A mixture of food and saliva.
37
Which of the following conditions is likely a result of the lack of Vitamin C?
Answer
(B)
Scurvy
38
What is a potential consequence of a diet consistently lacking in iron?
Answer
(B)
Anemia
39
Which substances can you found in the body during digestion?
Answer
A
B
C
D
40
Which of the following is a function of teeth?
Answer
(C)
To carry out physical digestion.
41
What is the role of the gallbladder in digestion?
Answer
(B)
To store bile.
42
What is the role of the tongue in the digestive process?
Answer
(C)
To mix food with saliva and help with swallowing.
43
Where is bile produced?
Answer
(B)
Liver
44
What does bile do to fats during digestion?
Answer
(B)
Emulsifies them
45
What is the approximate number of adult teeth?
Answer
(C)
32
46
What is the name of the enzyme that breaks down maltose?
Answer
(B)
Maltase
47
Which nutrient helps the body to transport oxygen?
Answer
(C)
Iron
48
What is the role of the small intestine in digestion?
Answer
(B)
The main site for nutrient absorption.
49
What is the main purpose of bile in digestion?
Answer
(B)
To emulsify fats.
50
What is the primary site for nutrient absorption in the digestive system?
Answer
(C)
Small intestine