CIE iGCSE Co-Ordinated Science B7.1 Diet Exam Style Questions Paper 1
Question
Which component of a balanced diet is a source of energy?
A. carbohydrates
B. minerals
C. vitamins
D. water
▶️Answer/Explanation
Answer: A. carbohydrates
Explanation: Carbohydrates are the primary source of energy in a balanced diet. They are broken down into glucose, which is used by the body for energy. Minerals, vitamins, and water are essential for various bodily functions but do not provide energy.
Question
Which nutrient is well provided by citrus fruits such as oranges and lemons?
A. carbohydrate
B. protein
C. vitamin C
D. vitamin D
▶️Answer/Explanation
Answer: C. vitamin C
Explanation: Citrus fruits are rich in vitamin C, which is essential for the growth and repair of tissues in the body.
Question
Which food ensures the blood has enough haemoglobin to carry oxygen?
(A) cheese which contains a large amount of calcium
(B) orange juice which contains a large amount of vitamin C
(C) liver which contains a large amount of iron
(D) salmon which contains a large amount of vitamin D
▶️Answer/Explanation
Ans: C
Question
Dogs are mammals and have the same types of teeth as humans.
Which tooth is a canine?
▶️Answer/Explanation
Ans : D
Question
Which nutrient is needed to make strong bones and teeth?
A calcium
B fat
C starch
D fibre
▶️Answer/Explanation
Ans : A
Question
A person has a low red blood cell count and is constipated.
Which row shows the components that may be in short supply in this person’s diet?
▶️Answer/Explanation
Ans : C
Question
What is a good source of vitamin C?
(A) citrus fruits
(B) liver
(C) meat
(D) milk
▶️Answer/Explanation
Ans: A
Question
Which row provides the greatest amount of the nutrient needed to move food through the alimentary canal?
▶️Answer/Explanation
Ans: C
Question
Which row about food groups is correct?
▶️Answer/Explanation
Ans : A
Question
Calcium and iron are components of the diet.
Which parts of the body need these components?
▶Answer/Explanation
Ans : C
Question
The waste from a factory is acidic. The factory treats the waste with limestone.
Which row shows the pH of the waste before and after treatment?
▶️Answer/Explanation
Ans: B
Questions
What is the dietary importance of fibre?
(A) It builds and repairs tissue.
(B) It builds strong bones and teeth.
(C) It helps to prevent constipation.
(D) It provides a source of iron.
▶️Answer/Explanation
Ans: C
Question
A colourless liquid is tested with blue cobalt(II) chloride paper. The blue paper turns pink.
What does this test prove that the liquid contains?
(A) an acid
(B) an alkali
(C) ethanol
(D) water
▶️Answer/Explanation
Ans: D
Question
Which are minerals?
- calcium
- fibre
- iron
A. 1 only
B. 1 and 3 only
C. 2 and 3 only
D. 1, 2 and 3
▶️Answer/Explanation
Answer: B. 1 and 3 only
Explanation: Calcium and iron are minerals, while fibre is a type of carbohydrate and not a mineral. Therefore, the correct answer is 1 and 3 only.
Question
Why is calcium needed in the diet?
A. to make carbohydrates
B. to make teeth
C. to make enzymes
D. to make protein
▶️Answer/Explanation
Answer: B. to make teeth
Explanation: Calcium is essential for the formation and maintenance of strong bones and teeth. It is a key mineral in the structure of these tissues.