Question

2. The table below shows the percentage composition of a fat and protein in six different meat types (A-F). Study it and answer questions 2(a) to 2(g). (a)(i) Which two of the meat types may be recommended for an obese patient? (ii) State one reason for the answer in 2(a)(i). (b)(i) Which two of the meat types would provide the most energy? (ii) State two reasons for the answer in 2(b)(i). (c)(i) Which three of the meat types would be recommended for a child suffering from kwashiorkor? (ii) State one reason for the answer in 2(c)(i). (d) Which of the meat types would most likely be suitable for (i) an active teenager, (ii) a 70-year old human? (e) Which other class of food provides energy in the human body? (f) State three uses of fat in the human body. (g) Describe briefly the procedure for testing for fat in a meat sample using a piece of white paper.

Accepted Answer

(a)(i) The meat types that may be recommended for obese patients are types A and D. (ii) This is because meat types A and D have low fat content and are rich in protein.
(b)(i) The meat types that will provide the most energy are B and C. (ii) This is because these meat types contain a large percentage of fats.
(c)(i) The three most suitable meat types for a child suffering from kwashiorkor are types A, C and D. (ii) It is because meat types A, C and D contain a high percentage of proteins.
(d)(i) An active teenager needs meat type B. (ii) The meat type that would most likely be suitable for a 70-year old human is type D.
(e) Apart from fats and oils, the other food class that provides a considerable amount of energy is carbohydrate.
(f) Uses of fat in the human body (any three): It provides energy; It serves as insulator; It protects vital organs.
(g) To test for fat in a meat sample, it should be rubbed against a white paper. The appearance of a translucent spot indicates/confirms the presence of fat.

WAEC Biology 2019 Theory — Question 2

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