WAEC Biology 2015 Theory — Question 7
Question 7 of 19 from the West African Examinations Council (WAEC) Biology 2015 Theory paper, with the correct answer and a full explanation.
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2(d)(i). State three benefits of including roughages in the diet of humans. (ii) State three reasons why proteins are important to humans.
Model answer
(i) Benefits of roughages: it prevents constipation; it stimulates bowel movement; and it reduces obesity (it does not contribute to weight gain). (ii) Importance of proteins: repair of worn-out tissues; body building/growth; and proteins are used for making enzymes, hormones, and antibodies.
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