Question # 1

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 +

The term enzyme was coined from a Greek word which means

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In yeast

In grapes

In apple

In bacteria

An activated enzyme consisting of polypeptide and cofactor is called as

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Activator

Apoenzyme

Holoenzyme

Coenzyme

Following enzymes are indicating the specificity of their action in their names, except

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Sucrase

Amylase

Pepsin

Lipase

The enzyme that works best at intermediate pH is

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Pepsin

Chymotrypsin

Sucrase

Pancreatic lipase

Soyabeans have been made resistant to a common

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Insecticide

Herbicide

Fungicide

Pesticide

Optimum pH of all human enzymes is

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Variable

Same

Acidic

Alkaline

Enzymes present in human body generally have

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Same optimum temperature and optimum pH

Same optimum temperature but different optimum pH

Same optimum pH but different optimum temperature

Different optimum temperature and optimum pH

Following substances can act as inhibitors, except

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Cyanide

Antimetabolites

Antibodies

Poisons

Nicotinamide adenine dinucleotide is an example of

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Cofactor

Coenzyme

Prosthetic group

Nucleotide

Formation of ES complex activates the______ site of an enzyme

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Active

Binding

Catalytic

Allosteric

Prosthetic groups are

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Radicals

Inorganic molecules

Organic molecules

Metal ions

The specificity of enzymes is due to their

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High molecular weight

pH sensitivity

Hydrogen bonding

Surface configuration

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

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1

2

3

4

Phosphorylation of glucose molecule in glycolysis is carried out by

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ATPase

Kinase

Isomerase

Transferase

Many enzymes are simply dissolved in the

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Nucleoplasm

Stroma of chloroplast

Cytoplasm

Matrix of mitochondria

Which of the following helps in recognition of substrate

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Active site

Catalytic site

Binding site

All

Succinic acid is the ____ of succinic dehydrogenase which undergoes____

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Active site, reduction

Prosthetic group, reduction

Substrate, oxidation

Substrate, reduction

Allosteric enzymes have ___ major sites

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1

2

3

4

At high substrate level, all the active sites of enzyme are

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Destroyed

Available

Degenerated

Occupied

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MDCAT Biology Chapter 7 Enzymes Online Test MCQs With Answers

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