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

What Are Enzymes MCQs with Answers PDF Download – Test 1

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"What Are Enzymes MCQs" App Download [Free] with MCQ: Carbon dioxide (CO₂) and water (H₂O) are produced as output when; with answers: oxidation does not occur at all, oxidation of glucose occurs, oxidation is accompanied with cell division, and oxidation is accompanied with water to improve laboratory skills. 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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