IGCSE O Level Biology Online Tests
Factors affecting enzymes Multiple Choice Questions (MCQ) PDF Download
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Factors affecting enzymes MCQs: Questions and Answers PDF Download
MCQ 1: Nature of rennin enzyme is slightly
- acidic
- alkaline
- water based
- mineral based
MCQ 2: Beyond optimum temperature, the enzyme becomes
- flat only
- hyperactive only
- flat and hyperactive
- denatured
MCQ 3: At a pH 7 to 9, the activity of amylase
- stops
- slows
- expedites
- ends
MCQ 4: Amylase becomes denatured at a acidic pH of
- 4
- 5
- 6
- 7
MCQ 5: In plants, enzymes become denatured above
- 40 °C
- 50 °C
- 60 °C
- 70 °C
IGCSE O Level Biology Practice Tests
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