IGCSE O Level Biology MCQs – Practice Test 1 (Chapter 19)

What Are Enzymes MCQs with Answers PDF Download – Test 1

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The "What Are Enzymes MCQs" App Download: All are wrong about Hydrogen peroxide (H₂O₂), but; MCQ with answers: poisonous to tissues, helps line up cell proteins, often needed as a catalyst, and aids in oxidation of glucose. Solve Vegetative Reproduction in Plants Quiz Questions, download Google e-Book (Free Chapter) to improve ecology studies.

What Are Enzymes MCQs with Answers PDF Download: MCQ Quiz 1

MCQ 1: Carbon dioxide (CO₂) and water (H₂O) are produced as output when:

oxidation of glucose occurs
oxidation does not occur at all
oxidation is accompanied with cell division
oxidation is accompanied with water

MCQ 2: All are wrong about Hydrogen peroxide (H₂O₂), but:

helps line up cell proteins
poisonous to tissues
often needed as a catalyst
aids in oxidation of glucose

MCQ 3: More the hydrogen peroxide (H₂O₂) in urine, the:

lighter the color of the strip
acidic the urine be
darker the color of the strip
more healthier a person be

MCQ 4: Amylase becomes denatured at a alkaline pH of:

MCQ 5: Nature of rennin enzyme is slightly:

acidic
alkaline
water based
mineral based

IGCSE O Level Biology MCQs App & e-Book – What Are Enzymes Study Guide

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