Digestive enzymes MCQS

Here Are 50 Multiple-Choice Questions (Mcqs) About

ENZYMES
USA University Syllabus



1. Enzymes are examples of:

a) Nucleic acids

b) Carbohydrates

c) Proteins (Correct)

d) Lipids



2. The active site of an enzyme is:

a) A regulatory region

b) A substrate-binding region (Correct)

c) A cofactor

d) A product-release region



3. Enzymes enhance chemical reactions by:

a) Increasing reaction temperature

b) Decreasing substrate concentration

c) Decreasing activation energy (Correct)

d) Increasing inhibitor concentration

, 4. An enzyme-catalyzed reaction will be fastest when:

a) Temperature is very low

b) pH is far from optimal

c) Substrate concentration is high (Correct)

d) Inhibitors are present



5. The Michaelis-Menten equation describes the relationship between:

a) Substrate concentration and enzyme activity

b) Enzyme concentration and substrate affinity

c) Enzyme activity and product concentration

d) Reaction rate and pH (Correct)



6. Competitive inhibitors compete with substrates for:

a) Active site binding (Correct)

b) Cofactor binding

c) Allosteric sites

d) Product release



7. Enzyme denaturation refers to:

a) Activation of enzymes

b) Loss of enzyme activity due to substrate depletion

c) Loss of enzyme structure and function (Correct)