Question # 1

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

The enzyme that works best at intermediate pH is

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Pepsin

Chymotrypsin

Sucrase

Pancreatic lipase

Catalase and chymotrypsin have similar

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Substrate

Product

Optimum pH

Metabolic impact

Formation of ES complex activates the______ site of an enzyme

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Active

Binding

Catalytic

Allosteric

Urine is preferably used as a vehicle for biotechnology product than:

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Blood

Milk

Plasma

Tissue fluid

Succinic acid is the ____ of succinic dehydrogenase which undergoes____

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Active site, reduction

Prosthetic group, reduction

Substrate, oxidation

Substrate, reduction

If substrate concentration is unlimited, rate of enzyme action becomes

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Inversely proportional to enzyme concentration

Directly proportional to enzyme concentration

Directly proportional to substrate Concentration

Inversely proportional to substrate

Concentration

Potentially damaging enzymes are produced in

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Active form

Inactive form

Abundant quantity

Minor quantity

Optimum pH for digestive enzymes of stomach is

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Highly acidic

Highly alkaline

slightly acidic

slightly alkaline

The specificity of enzymes is due to their

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High molecular weight

pH sensitivity

Hydrogen bonding

Surface configuration

____can be checked by increasing substrate concentration

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Reversible inhibition

Irreversible inhibition

Noncompetitive inhibition

Competitive inhibition

If non protein part is covalently bonded to the protein part of enzyme, it is known as

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Coenzyme

Prosthetic group

Activator

Cofactor

The competitive inhibitor competes with the

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Enzyme

Cofactor

Substrate

Coenzyme

Which of the following acts as a bridge between enzyme and substrate?

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Activator

Cofactor

Prosthetic group

Apo-enzyme

Flavin adenine dinucleotide is a

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Prosthetic group

Activator

Coenzyme

Inhibitor

Function of succinic dehydrogenase is aided by

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Metal ion

Vitamin

NAD

FAD

The term enzyme was coined from a Greek word which means

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In yeast

In grapes

In apple

In bacteria

The rate of enzyme action will be minimum at

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Optimum pH

Optimum temperature

Optimum conditions

Maximum temperature

Many enzymes are simply dissolved in the

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Nucleoplasm

Stroma of chloroplast

Cytoplasm

Matrix of mitochondria

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

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 +

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