Enzyme quiz Unit I and II

Which of the following is the correct Line weaver-Burk equation?

Ribozymes are made up of?

• Proteins

• RNA

• DNA

• Carbohydrates

Crystallization of urease was done by

• Louis Pasteur

• James Sumner

• J. B. S. haldane

• Frederick W. Kuhne

Coenzymes are mostly made up of?

• Inorganic metal ions

• Vitamins

• Proteins

• Nucleic acids

Tightly bound cofactors are called?

• Holozyme

• Apozyme

• Coenzyme

• Prosthetic Group

If Km increases, affinity of the substrate for enzyme?

• Increases

• Decreases

• Unaffected

• Sometimes increases and sometime decreases

Catalytic efficiency is given by?

• Kcat/Km

• Km/Kcat

• Kcat

• Km

The term apoenzyme is applicable to

• Simple enzyme

• Protein part of conjugate enzyme

• organic cofactor of a conjugate enzyme

• inorganic cofactor of a conjugate enzyme

which of the following are NOT true of enzymes?

• All Enzymes are proteins

• Enzymes have great catalytic power

• Enzymes bind substrate with high affinity

• The catalytic activity of enzymes is often regulated

Effect of competitive inhibitor can be removed by

• Increasing the concentration of inhibitor

• Increasing the concentration of substrate

• Both of the above

• None of the above