page 02 SECTION 1 — 20 marks Attempt ALL questions 1. The following substances are products of fermentation. 1 ATP 2 Lactate 3 Carbon dioxide Which of these are products of fermentation in human muscle cells? A 2 only B 1 and 2 only C 2 and 3 only D 1, 2 and 3 2. The diagram represents a stage of cellular respiration that occurs in a mitochondrion. inner membrane proteins Q P P R water + Which row in the table identifies substances P, Q and R? Substances P Q R A ATP hydrogen ions and electrons oxygen B hydrogen ions and electrons oxygen ATP C oxygen ATP hydrogen ions and electrons D hydrogen ions and electrons ATP oxygen