Question # 1

Optimum pH of all human enzymes is

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Variable

Same

Acidic

Alkaline

Formation of ES complex activates the______ site of an enzyme

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Active

Binding

Catalytic

Allosteric

The term enzyme was coined from a Greek word which means

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In yeast

In grapes

In apple

In bacteria

Both ____ and ____ are detachable cofactors

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Apoenzyme, holoenzyme

Activator, coenzyme

Coenzyme, prosthetic group

Prosthetic group, activator

Soyabeans have been made resistant to a common

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Insecticide

Herbicide

Fungicide

Pesticide

Phosphorylation of glucose molecule in glycolysis is carried out by

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ATPase

Kinase

Isomerase

Transferase

Pick up the correct statement according to induced fit model of enzyme action

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Enzyme induces changes in substrate structure

Substrate induces changes in enzyme structure

Active site of enzyme is a rigid structure

Active site of enzyme is used as a template +

About three billion base pairs are present in the genome of a

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Horse

Dog

Man

Monkey

Succinic acid differs from malonic acid by

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OH

CH₂

CH₃

CHO

______form the raw material for coenzyme

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Nucleic acid

Lipids

Vitamins

Proteins

The optimum temperature for most of the enzymes in human body is

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37 ^oC

35^oC

37 ^oF

98.6^oC

The competitive inhibitor competes with the

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Enzyme

Cofactor

Substrate

Coenzyme

By adding _______in neutral pH, we get the optimum pH of pancreatic lipase

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1

2

3

4

Flavin adenine dinucleotide is a

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Prosthetic group

Activator

Coenzyme

Inhibitor

Catalase and chymotrypsin have similar

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Substrate

Product

Optimum pH

Metabolic impact

Which of the following kind of inhibitors don’t compete for active site of enzyme

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Irreversible competitive

Reversible competitive

Reversible non competitive

Both b and c

Potentially damaging enzymes are produced in

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Active form

Inactive form

Abundant quantity

Minor quantity

Succinic acid dehydrogenase +succinic acid and high concentration of malonic acid?

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Maleic acid

Fumaric acid

No reaction

Oxalic acid

Slight change in pH can cause

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Denaturation

Crystallization

Ionization

All

Function of succinic dehydrogenase is aided by

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Metal ion

Vitamin

NAD

FAD

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MDCAT Biology Chapter 7 Enzymes Online Test MCQs With Answers

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