A-LevelBiologyEnzymesMay/June 2013Paper 1 Q141 Mark
Two pairs of students each counted the number of bubbles of oxygen given off in an experiment investigating the effect of catalase from plant tissue on hydrogen peroxide. Each pair repeated the experiment five times and calculated the mean number of bubbles per minute. Which have correctly calculated the mean?
A1, 3 and 4 only
B1 and 4 only
C2 only
D3 only
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of enzymes within the Biologysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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