A-LevelBiologyEnzymesFeb/Mar 2020Paper 3 Q122 Marks
Yeast cells contain an enzyme, catalase, which catalyses the release of oxygen from the substrate hydrogen peroxide. You will investigate the effect of temperature on the activity of catalase in yeast suspension Y. You are provided with the materials shown in Table 1.1. Table 1.1 labelled contents hazard volume/cm³ Y 3.0% yeast suspension none 100 H 3.0% hydrogen peroxide solution irritant 20 If any of Y or H comes into contact with your skin, wash off immediately under cold water. It is recommended that you wear suitable eye protection.
✓ Correct Answer
The correct answer is —. 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...
🔒
Unlock the Examiner's Answer
Sign up for free to reveal the correct answer, the official mark scheme breakdown, and the examiner trap analysis for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep