Two model muscle cells have the same energy demand. In each cell, aerobic respiration releases 30 units per glucose molecule and anaerobic respiration releases 2 units.
Cell P obtains all its energy by respiring 8 glucose molecules aerobically. Cell Q obtains half of the same energy demand aerobically and half anaerobically.
How many glucose molecules does cell Q break down in total?
60 molecules
8 molecules
64 molecules
120 molecules
98 exam-style questions on Edexcel GCSE Biology 8.3 Respiration, covering 8.3.1 Aerobic and anaerobic respiration. Each one has a worked solution and a mark scheme showing where the marks go.