7.1· 22 questions · 22 marks · 26 min · 2018–2025· Multiple choice
Every Cambridge IGCSE Biology (9-1) Paper 1 question on diet, laid out as 6 A4 pages with the mark scheme below. Nothing is left out. Free to read, no account.



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6 / 6Answers below. Sit the paper first if you are practising.
Pastlit
Biology (9-1) 0970 · Diet — Paper 1
IGCSE · topical answer key — answer key (teacher use)
Question
Answer
Marks
| Question | Answer | Marks | From |
|---|---|---|---|
| 1 | B | 1 | 0970/11 May/June 2018 |
| 2 | B | 1 | 0970/11 May/June 2018 |
| 3 | A | 1 | 0970/11 May/June 2018 |
| 4 | C | 1 | 0970/12 Oct/Nov 2018 |
| 5 | D | 1 | 0970/11 May/June 2019 |
| 6 | B | 1 | 0970/12 Oct/Nov 2019 |
| 7 | D | 1 | 0970/12 Oct/Nov 2019 |
| 8 | B | 1 | 0970/11 May/June 2020 |
| 9 | B | 1 | 0970/12 May/June 2020 |
| 10 | A | 1 | 0970/12 Oct/Nov 2020 |
| 11 | C | 1 | 0970/12 Oct/Nov 2021 |
| 12 | B | 1 | 0970/11 May/June 2022 |
| 13 | B | 1 | 0970/12 May/June 2022 |
| 14 | D | 1 | 0970/12 Oct/Nov 2022 |
| 15 | D | 1 | 0970/11 May/June 2023 |
| 16 | C | 1 | 0970/12 May/June 2023 |
| 17 | A | 1 | 0970/12 May/June 2023 |
| 18 | C | 1 | 0970/11 May/June 2024 |
| 19 | C | 1 | 0970/11 May/June 2024 |
| 20 | A | 1 | 0970/12 Oct/Nov 2024 |
| 21 | A | 1 | 0970/11 May/June 2025 |
| 22 | B | 1 | 0970/12 May/June 2025 |
12 What is the best source of vitamin C in a balanced diet? A fish B fruit C meat D rice
1 marks
Answer: B
13 A young, active woman requires more of which constituent in her diet than a young, active man? A fat B iron C protein D vitamin C
1 marks
Answer: B
14 Which condition could be caused by a lack of iron? A anaemia B cholera C scurvy D diabetes
1 marks
Answer: A
13 What is the result of a diet lacking iron? A bleeding gums B poor wound healing C reduced number of red blood cells D weak bones and teeth
1 marks
Answer: C
13 The chart is used to find a person’s recommended mass. 1.85 low low low ideal ideal ideal slightly slightly slightly moderately moderately moderately mass mass mass mass mass mass obese obese obese obese obese obese 1.80 1.75 1.70 height / m 1.65 1.60 1.55 1.50 30 40 50 60 70 80 90 100 110 120 130 140 150 160 mass / kg For the data provided about body mass and height, which person would benefit most from the introduction of a calorie-controlled diet and regular exercise? body mass height / kg / m A 40 1.55 B 50 1.75 C 70 1.80 D 90 1.75
1 marks
Answer: D
12 The pie charts show the composition of 100 g of four different foods. Which food provides the most energy? A B C D key carbohydrate fats and oils protein water
1 marks
Answer: B
17 Which factor increases the risk of developing coronary heart disease? A low fat diet B regular exercise C relaxation D smoking
1 marks
Answer: D
11 Which substance found in a healthy diet helps to prevent constipation? A fat B fibre C minerals D vitamins
1 marks
Answer: B
11 Which substance found in a healthy diet helps to prevent constipation? A fat B fibre C minerals D vitamins
1 marks
Answer: B
13 The graph shows how the percentage of protein found in potatoes was affected by the concentration of nitrate fertiliser added to the crop when it was growing. percentage of protein in potatoes concentration of nitrate fertiliser added These results suggest that greater concentrations of nitrate fertiliser allow the potatoes to make more A amino acids. B cellulose. C lipid. D starch.
1 marks
Answer: A
14 What is the dietary importance of carbohydrates? A to promote healthy bones and teeth B to make fats C to provide energy for the body D to make proteins
1 marks
Answer: C
14 What is the dietary importance of fibre in humans? A for growth and repair of cells B to help food move through the alimentary canal C to maintain strong bones and teeth D to provide energy
1 marks
Answer: B
14 The table shows some different components in a balanced diet. Which row correctly matches the components to the reasons why they are needed? vitamin D water fats A insulation bone growth to make haemoglobin B bone growth transport insulation C transport to make haemoglobin bone growth D to make haemoglobin insulation transport
1 marks
Answer: B
12 The substances listed are found in the leaf of a plant. Which substance is obtained from the soil? A carbon dioxide B chlorophyll C glucose D mineral ions
1 marks
Answer: D
14 The haemoglobin concentration in the blood of a person is 80 g / dm3. The accepted normal concentration is 120 g / dm3 or above. Which substance may be lacking in their diet? A calcium B fats C fibre D iron
1 marks
Answer: D
14 The lack of which component of a balanced diet will lead to the development of scurvy? A calcium B iron C vitamin C D vitamin D
1 marks
Answer: C
16 The food label is from a packet of cereal. The label can help someone who is concerned about their diet. Nutrition Typical values 100 g contains Energy 985 kJ 235 kcal Fat 1.5 g of which saturates 0.3 g Carbohydrate 45.5 g of which sugars 3.8 g Fibre 2.8 g Protein 7.7 g Salt 0.5 g A person eats 45 g of cereal. One of the food types listed in the label can help prevent constipation. How many grams of this food type does the person eat? A 1.3 g B 2.8 g C 3.5 g D 7.7 g
1 marks
Answer: A
15 Which row shows the correct use in the body and food source for one of these vitamins? vitamin use in body food source A C strengthens bones and teeth sugar B C resistance to disease fish oil C D strengthens bones and teeth fish oil D D resistance to disease sugar
1 marks
Answer: C
16 Which substance is an ion that is used to make chlorophyll? A calcium B iron C magnesium D starch
1 marks
Answer: C
16 The table shows some of the nutrients found in yoghurt. content per 100 g nutrient of yoghurt / g carbohydrate 6.90 protein 4.80 fat 1.50 calcium 0.16 One serving size of yoghurt is 150 g. One of the nutrients in the yoghurt is required for healthy bones and teeth. What is the mass of this nutrient in one serving of yoghurt? A 0.24 g B 2.25 g C 7.20 g D 10.35 g
1 marks
Answer: A
14 Why is iron an important component of the human diet? A Iron is needed to make haemoglobin. B Iron is needed to prevent rickets. C Iron is needed to prevent scurvy. D Iron is needed to strengthen teeth.
1 marks
Answer: A
12 A diet contains a lot of plant material, but no meat. Which dietary component is unlikely to be deficient in this diet? A fat B fibre C protein D vitamin D
1 marks
Answer: B