Enzymes Quiz

Which of the following coenzymes is not a reducing agent

• NADH

• FADH2

• NADP

What are enzymes made of

• DNA and RNA (and some protein).

• Carbohydrates.

• Fats.

• Proteins.

• Glucoproteins

An organic substance bound to an enzyme and essential for its cavity is called:

• Coenzyme

• Holoenzyme.

• Apoenzyme

• Isoenzyme.

• cofactor

Enzymes are polymers of

• Hexose sugar

• Amino acids.

• Fatty acids

• Inorganic phosphate.

An enzyme that joins the ends of two strands of nucleic acid is

• Polymerase

• Ligase

• Synthetase

• Helicase

In enzyme kinetics Km implies:

• The substrate concentration that gives one half Vmax

• The dissocation constant for the enzyme substrate comples.

• Concentration of enzyme

• Half of the substrate concentration required to achieve Vmax.

Which of the following terms are involved in Michaelis-Menten Equation?

• Vmax

• Km

• ALL of above

In an enzyme catalyzed reaction, __________ provides information on __________ and __________ provides information on __________.

• KM, chemical step, VMAX, substrate binding.

• VMAX, chemical step, kCAT, substrate binding.

• KD, substrate binding, kCAT, chemical step

• KM, substrate binding, VMAX, chemical step.

When [S] = 0.1*KM, the velocity of an enzyme catalyzed reaction is about:

• 0.1*Vmax

• 0.3*Vmax

• 0.5*Vmax

• 0.7*Vmax.

Which type of attachment between the molecule and the enzyme changes the enzymatic activity?

• Metallic

• Covalent

• Peptide

• Glycosidic bond.