O Level Chemistry MCQs – Certification Test 192

Catalysts and Enzymes Quiz (Question 192) – App & e-Book Download

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MCQ 192: The optimal temperature for enzymes is:

room temperature
35-37 °C
40-45 °C
above 45 °C

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O Level Chemistry Quiz App & e-Book – Catalysts & Enzymes Study Guide

Isotopes and Number of Neutrons Test 203

Ions and Ionic Bonds Test 204

Oxidation and Reduction Test 205

Atoms and Elements Test 206

Atoms and Elements Test 207

Electrical Devices and Circuit Symbols Test 208

Atomic Mass Test 209

Kinetic Theory Test 210

Strong and Weak Acids Test 211

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