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Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
13. Excretion in humans
13.1. Excretion in humans

Describe deamination as the removal of the nitrogen-containing part of amino acids to form urea

12. Respiration
12.3. Anaerobic respiration

Describe anaerobic respiration as the chemical reactions in cells that break down nutrient molecules to release energy without using oxygen