Question # 1

The specificity of enzymes is due to their

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High molecular weight

pH sensitivity

Hydrogen bonding

Surface configuration

Slight change in pH can cause

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Denaturation

Crystallization

Ionization

All

The competitive inhibitor competes with the

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Enzyme

Cofactor

Substrate

Coenzyme

The rate of enzyme action will be minimum at

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Optimum pH

Optimum temperature

Optimum conditions

Maximum temperature

Ribozyme is found in

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Mitochondria

Cytoplasm

Lysosomes

Ribosomes

The term enzyme was coined from a Greek word which means

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In yeast

In grapes

In apple

In bacteria

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

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Destroyed

Available

Degenerated

Occupied

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

Prosthetic groups are

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Radicals

Inorganic molecules

Organic molecules

Metal ions

Flavin adenine dinucleotide is a

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Prosthetic group

Activator

Coenzyme

Inhibitor

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

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

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Horse

Dog

Man

Monkey

____can be checked by increasing substrate concentration

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Reversible inhibition

Irreversible inhibition

Noncompetitive inhibition

Competitive inhibition

Which one of the following enzymes have slightly acidic pH as optimum pH?

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Sucrase

Enterokinase

Pepsin

Catalase

______form the raw material for coenzyme

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Nucleic acid

Lipids

Vitamins

Proteins

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

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Maleic acid

Fumaric acid

No reaction

Oxalic acid

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

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1

2

3

4

Catalase and chymotrypsin have similar

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Substrate

Product

Optimum pH

Metabolic impact

Allosteric enzymes have ___ major sites

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1

2

3

4

Inorganic ions can play a role of ¬¬¬¬¬¬¬______ in enzyme catalysis

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Coenzyme

Inhibitor

Apo enzyme

Cofactor

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MDCAT Biology Chapter 7 Enzymes Online Test MCQs With Answers

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