IGCSE A Level Chemistry Exam MCQs – Practice Test 4 (Chapter 7)

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Chemistry of Life Test Questions and Answers PDF Download: MCQ 4

MCQ 16: Non-polar side chains in amino acids include:

MCQ 17: The turnover number refers to the number of:

moles of enzymes converted to product per minute
moles of substrate converted to product per minute
substrate molecules reacted per enzyme per minute
moles of enzymes consumed in the reaction

MCQ 18: Consider the reaction: (NH₂)₂CO + H₂O → NH₃ + CO₂. Water in this reaction:

acts as a solvent
helps to dissolve the residues away
acts with the urea only after urea is bound to enzyme surface
acts as a suspension

MCQ 19: Amino acids are by nature:

acidic
basic
amphoteric
alkalinic

MCQ 20: Individual chemicals involved in the sequences of reactions are called:

metabolism
metabolites
catalysts
enzymes

Chemistry of Life Exam Prep – IGCSE A Level Chemistry Notes App & e-Book

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