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Biology for IGCSE & O level - Human Nutrition (Section 7)

1
What process in the digestive system involves the movement of food through the digestive tract?
Answer
(C)
Peristalsis
2
Which of the following is a key feature of the small intestine that aids in absorption?
Answer
(C)
Its large surface area
3
Which of the following are key sources of vitamin C?
Answer
A
C
4
Which of the following is NOT a key function of fiber?
Answer
(C)
Providing the body with energy
5
What is the main function of the duodenum?
Answer
(B)
Digestion of food.
6
What is the function of lipase?
Answer
(B)
To break down fats into fatty acids and glycerol.
7
Where is the enzyme amylase produced?
Answer
(C)
Salivary glands and Pancreas
8
What can result from a deficiency of vitamin D?
Answer
(B)
Rickets
9
What is the primary function of digestion?
Answer
(A)
To convert large food molecules into smaller ones.
10
What is the term for the process where nutrients enter the bloodstream?
Answer
(B)
Absorption
11
Which of the following best describes the role of the gallbladder?
Answer
(B)
To store bile.
12
Which of the following enzymes is not found in the small intestine?
Answer
(D)
Pepsin
13
Which of the following is an enzyme involved in the digestion of starch in the mouth?
Answer
(C)
Amylase
14
What type of teeth are best suited for grinding food?
Answer
(D)
Molars
15
What could be the result of consuming an excessive amount of saturated fats?
Answer
(C)
Increased risk of heart disease
16
What is the main function of the large intestine?
Answer
(B)
Absorption of water and formation of feces.
17
Which of the following is a role of dietary fiber?
Answer
(C)
Aiding digestion and preventing constipation
18
A balanced diet should include food from how many main food groups?
Answer
(C)
5
19
Which of the following is the main function of carbohydrates?
Answer
(B)
Providing energy
20
Which type of food should be consumed in moderation as part of a balanced diet?
Answer
(C)
Sugary drinks
21
What is the role of the tongue in the process of digestion?
Answer
(C)
To mix food with saliva and form a bolus.
22
Where does the process of swallowing begin?
Answer
(D)
The pharynx
23
What are the two categories of nutrients?
Answer
(A)
Macronutrients and micronutrients
24
Which of the following are good sources of Vitamin D?
Answer
A
B
25
What is the primary function of the digestive system?
Answer
(B)
To break down food into nutrients.
26
Which of the following conditions is associated with a deficiency of Vitamin D?
Answer
(B)
Rickets
27
Which of the following nutrients is MOST important for the repair of body cells?
Answer
(B)
Proteins
28
Where does most of the digestion and absorption of nutrients take place?
Answer
(B)
Small intestine
29
In which part of the digestive system is water primarily absorbed?
Answer
(B)
Large intestine
30
Which nutrient is most important for providing the structure of the body?
Answer
(B)
Proteins
31
What is the role of bile in digestion?
Answer
(B)
To emulsify fats.
32
Which of the following processes occur in the mouth during digestion?
Answer
A
C
33
What is the purpose of chewing food before swallowing?
Answer
(C)
To increase the surface area for digestion.
34
Which structure prevents food from entering the trachea?
Answer
(B)
Epiglottis
35
What is the function of the pancreas in digestion?
Answer
(B)
To produce digestive enzymes and hormones.
36
Which part of the digestive system does the food bolus enter after it leaves the mouth?
Answer
(B)
Oesophagus
37
Which of the following are functions of vitamins?
Answer
A
B
38
Which of the following is a primary function of the small intestine?
Answer
(B)
To absorb nutrients
39
Which of the following organs does not directly secrete digestive enzymes?
Answer
(D)
Gallbladder
40
Which substances are found in pancreatic juice?
Answer
A
C
D
41
Where does most of the water absorption occur in the digestive system?
Answer
(C)
Large intestine
42
Which of the following substances is responsible for lubricating the passage of the food bolus down the throat?
Answer
(C)
Mucus
43
Which of the following is a function of fibre in the diet?
Answer
(B)
Aiding digestion
44
What is the function of the enamel on a tooth?
Answer
(C)
To protect the tooth from damage.
45
What is the primary goal of physical digestion?
Answer
(C)
To increase the surface area of food.
46
Which of the following is a function of water in the human body?
Answer
(B)
To regulate body temperature
47
Which nutrient helps in the absorption of calcium in the body?
Answer
(D)
Vitamin D
48
What is the main purpose of assimilation in digestion?
Answer
(C)
The use of absorbed nutrients by the body cells.
49
The digestion of which type of food begins in the mouth?
Answer
(C)
Carbohydrates
50
Which of the following is a symptom of iron deficiency anemia?
Answer
(B)
Pale skin