IGCSE A Level Chemistry MCQs - Chapter 7

Chemistry of Life Multiple Choice Questions (MCQ) PDF - 4

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Chemistry of Life Questions & Answers PDF Download: MCQ Quiz 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

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