Enzyme Technology Practice Test 9

1. Which of the following enzyme is used as a label?

Hexokinase

Urease

Lactate dehydrogenase

β-galactosidase

2. Which of these is not an example for stereo specificity?

L-lactate dehydrogenase will act only on L-lactic acid, and not D-lactic acid

L-amino oxidase acts only on L-amino acids and not D-aminoacids

Hexokinase phosphorylating one or more kind of hexoses

D-glucose oxidase acting only on D-glucose and not L-glucose

3. Which of the following enzymes are not used in the treatment of gastrointestinal tract disorder and chronic pancreatitis?

Amylase elastase

Trypsin

Cellulase

Pepsin

4. Which of the following is not an enzyme?

Carbonic anhydrase

Selenium

Ribonucleotide reductase

Glutathione peroxidase

5. The method for determining molecular weight based on the size is __________

mass spectrometry

biosensor

ultracentrifugation

gel filtration

6. Salivary α-amylase cleaving α(1 → 4) glycosidic bond of carbohydrates is an example for which type of specificity?

Reaction specificity

Group specificity

Broad substrate specificity

Bond specificity

7. Which of the following coenzyme does not function as a redox reaction?

Flavin adenine nucleotide

Deoxyadenosylcobalamin

Flavin mononucleotide

Nicotinamide adenine dinucleotide

8. Additional non protein chemical component required for optimum activity of enzymes is referred to as ___________

holoenzyme

coenzymes

isoenzyme

cofactors

9. Which of the following is not a clinical significance of aldolase?

Progressive muscular dystrophy

Insecticide poisoning

Viral hepatitis

Prostate cancer

10. Which of the following is not an isoenzyme of acid phosphatase?

Salivary

Prostate

Spleen

Liver