05. Past Public Examination Questions on Food and Human.pdf...

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Past Public Examination Questions on Food and Human P. 1 / 12 Past Public Examination Questions on Food and Human (C.5) Conventional Questions 1. The table below shows an analysis of the food taken by a 15-year-old boy during the course of one day: (roughage = dietary fibre) (i) Apart from water, which essential inorganic component of a balanced diet is not listed in the table? (ii) Of the food taken for lunch and supper, which one would provide the largest proportion of carbohydrate? (iii) The normal daily requirement of protein and energy recommended for such a boy is 70 g and 11700 kJ respectively. (1) Describe what happens to the excess protein in his body. (2) How can extra energy be derived from his body to meet his daily requirement? (iv) It is suggested that oranges should also be taken in order to make up for the deficiency of two of the food components listed. (1) Give two reasons supporting this suggestion. (2) State two kinds of disorder he would suffer as a result of a long term deficiency of such food components. (12 marks) (HKCEE 1985) 2. The table below shows the composition by weight of certain nutrients present in soya beans and milk. The daily requirement of an adult for the respective nutrients is also included. and the result of such a test. (2 marks) (HKCEE 1987) 3. The table below shows the average body weight, the daily requirements of energy and certain nutrients for four groups of people (i) (1) Which group of people requires the greatest amount of energy per unit body weight? Show how you arrive at your answer. (2 marks) (2) Suggest a reason why this group of people requires the greatest amount of energy per unit body weight. (2 marks) (ii) How do men differ from children in their requirements for vitamin D? Give a reason for this difference. (2 marks) (iii) Of the three adult groups, which group requires the largest amount of protein? Why is this so? (i) If the adult took in only 1000 g of soya bean in a day, (1) which nutrients shown in the table would he in excess of his daily requirement ? the men and the non-pregnant women. (2 marks) (2 marks) (2) what would be the fate of the excess nutrients in (i) in his body ? (4 marks) (ii) Given that the energy content of 100 g of milk Is 272 kJ, calculate the minimum amount of milk a baby should take per day in order to meet its daily energy requirement of 3400 kJ. (2 marks) (iii) Why is milk considered an ideal food for babies? (1 mark) (iv) What is the importance of calcium in the body? (1 mark) (v) State a test for the presence of protein in milk, and the result of such a test. (2 marks) (HKCEE 1987) 3. The table below shows the average body weight, the daily requirements of energy and certain nutrients for four groups of people (i) (1) Which group of people requires the greatest amount of energy per unit body weight? Show how you arrive at your answer. (2 marks) (2) Suggest a reason why this group of people requires the greatest amount of energy per unit body weight. (2 marks) (ii) How do men differ from children in their requirements for vitamin D? Give a reason for this difference. (2 marks) (iii) Of the three adult groups, which group requires the largest amount of protein? Why is this so? (2 marks) (iv) Account for the difference in iron requirement for the men and the non-pregnant women. (2 marks)
Past Public Examination Questions on Food and Human P. 2 / 12 4. The table below shows the contents and the energy value of human milk and cow's milk: With reference to the table above, answer the following questions: (i) (1) Which mineral is present in the least amount in both types of milk? (1 mark) (2) In the absence of this mineral, what deficiency symptom would develop?

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