WAEC Biology 2024 Theory — Question 1
Question 1 of 19 from the West African Examinations Council (WAEC) Biology 2024 Theory paper, with the correct answer and a full explanation.
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1. State one function each of the following parts of the nephron: (i) glomerulus; (ii) Bowman's capsule; (iii) proximal convoluted tubule; (iv) distal convoluted tubule.
Model answer
(i) Glomerulus: carries out ultrafiltration — filters the blood passing through it. (ii) Bowman's capsule: collects the filtrate from the glomerulus. (iii) Proximal convoluted tubule: carries out selective reabsorption — reabsorbs certain nutrients/materials/substances/amino acids, vitamins. (iv) Distal convoluted tubule: causes tubular secretion/secretion of molecules/ions; reabsorbs water.
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