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Biology for IGCSE & O level - Human Nutrition (Section 6)

1
Which of the following is a key function of vitamin C?
Answer
(D)
Helps with wound healing
2
Which of the following is the correct sequence of events in the digestion of starch?
Answer
(A)
Mouth, Stomach, Small Intestine
3
Which of the following enzymes is secreted by the salivary glands?
Answer
(B)
Amylase
4
What is the role of the esophagus in digestion?
Answer
(C)
To transport food from the mouth to the stomach.
5
Which of the following is a function of vitamins?
Answer
(B)
To help regulate the body's metabolism
6
What is the role of the epiglottis?
Answer
(B)
To prevent food from entering the trachea.
7
Which of the following is essential for growth and repair?
Answer
(B)
Proteins
8
Which part of the digestive system connects the mouth to the stomach?
Answer
(B)
The oesophagus
9
Which of the following structures increases the surface area of the small intestine?
Answer
(C)
The villi and microvilli
10
Which of the following is a potential health problem associated with a diet high in saturated fats?
Answer
(C)
Heart disease
11
What is the role of the epiglottis during swallowing?
Answer
(B)
To prevent food from entering the trachea.
12
Peristalsis is best described as:
Answer
(C)
Waves of muscular contractions that move food along the digestive tract.
13
What is the function of the gallbladder?
Answer
(B)
To store bile
14
Which gland produces saliva?
Answer
(C)
Salivary Glands
15
Which type of teeth are missing in milk teeth/primary dentition?
Answer
(C)
Premolars
16
Which of the following describe key structural features of the small intestine that facilitate efficient absorption?
Answer
A
B
D
17
What adaptations does the small intestine have to efficiently absorb nutrients?
Answer
A
C
D
18
Which food group provides the greatest amount of fiber in a typical diet?
Answer
(A)
Fruits and Vegetables
19
Which of the following is a good source of dietary fiber?
Answer
(C)
Whole grains
20
Where is trypsin produced?
Answer
(B)
Pancreas
21
What is the function of villi in the small intestine?
Answer
(B)
To absorb nutrients.
22
Which of the following food components is not broken down during digestion?
Answer
(D)
Vitamins
23
What triggers the release of gastric juice?
Answer
(C)
The presence of food in the stomach.
24
What is the name of the process of elimination of undigested waste?
Answer
(D)
Egestion
25
Which part of the digestive system does NOT directly participate in the chemical digestion of food?
Answer
(C)
Oesophagus
26
Which of the following is NOT a function of the stomach?
Answer
(C)
Absorption of water
27
Which of the following is not a function of saliva?
Answer
(C)
To break down proteins
28
What is the primary function of the large intestine (colon)?
Answer
(B)
To store and eliminate waste.
29
What is the name of the process where digested nutrients are taken up into the bloodstream?
Answer
(C)
Absorption
30
Which vitamin is essential for good vision?
Answer
(A)
Vitamin A
31
What is the function of amylase in the digestive process?
Answer
(B)
To break down starches.
32
What type of teeth are not present in the milk teeth?
Answer
(C)
Premolars
33
What type of enzyme is salivary amylase?
Answer
(D)
Carbohydrase
34
What are the functions of hydrochloric acid in the stomach?
Answer
A
C
35
What process does the enzyme amylase catalyze?
Answer
(C)
The breakdown of starch
36
Which of the following statements about the oesophagus is correct?
Answer
(D)
It has circular and longitudinal muscles for peristalsis.
37
Which substance neutralizes the acidic chyme as it enters the small intestine?
Answer
(C)
Pancreatic juice
38
What is the primary function of the large intestine?
Answer
(C)
Absorption of water and formation of feces.
39
What is the role of enzymes in digestion?
Answer
(A)
To speed up chemical reactions.
40
Which of the following is NOT a function of the small intestine?
Answer
(C)
Production of bile
41
Which of the following is not a source of carbohydrate?
Answer
(C)
Meat
42
Which of the following is NOT considered a macronutrient?
Answer
(C)
Vitamins
43
Which of the following enzymes is NOT involved in the digestion of food in the small intestine?
Answer
(D)
Pepsin
44
Which organ stores bile?
Answer
(B)
Gall bladder
45
What are the functions of the stomach?
Answer
A
B
D
46
Where does the digestion of food primarily occur?
Answer
(D)
Small Intestine
47
Which are features of the small intestine that facilitate absorption of nutrients?
Answer
A
B
48
What does 'egestion' mean in the context of digestion?
Answer
(C)
The elimination of waste materials
49
Which of the following is a characteristic of a balanced diet?
Answer
(B)
Providing all the necessary nutrients.
50
What type of teeth are primarily responsible for tearing food?
Answer
(B)
Canines