Class 9 Biology MCQs – Practice Test 1 (Chapter 6)

Enzymes MCQs with Answers PDF Download – Test 1

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Enzymes MCQs – Practice Test 1 PDF Download

MCQ 1: The catalytic region in which a small portion of molecules are involved in catalysis is called:

duplication site
absorption site
active site
inactive site

MCQ 2: The regulators of enzymatic reactions are classified as:

activators only
converters only
inhibitors
activators and converters

MCQ 3: The model which states that specific shapes are possessed by substrate and enzyme is known as:

deduction model
induction model
lock and key model
arrow and shield model

MCQ 4: The model proposed by Emil Fischer is known as:

arrow and shield model
deduction model
induction model
lock and key model

MCQ 5: The kind of molecules at which the enzymes act are classified as:

solutes
concentrates
nitrates
substrates

Class 9 Biology MCQs App & e-Book – Enzymes Study Guide

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