QuizMaster

Inhibitors which block the enzyme by forming weak bond are called___________?

A. Competitive inhibitors.
B. Non-competitive inhibitors
C. Irreversible inhibitors.
D. Both a and b

Magnifying power of electron microscope as compared to eye is____________?

A. 500 X
B. 250000X
C. 500000X
D. 250X

Malonic acid is an example of____________?

A. Irreversible inhibitor
B. Reversible inhibitor
C. Competitive inhibitor
D. Non-competitive inhibitor

The structure of an enzyme is altered by____________?

A. Irreversible inhibitor
B. Reversible inhibitor
C. Competitive inhibitor
D. Non-competitive inhibitor

In cell fractionation various components of cells including its organelles can be isolated in different layers depending upon____________?

A. Their physical properties like size & weight.
B. Physical properties of the medium like its density.
C. Their electrical properties like their charges
D. Both a and b

If enzyme concentration is low than substrate pH and temperature values are equal to requirement then which of the following will increase rate of reaction____________________?

A. increase in concentration of enzyme
B. increase in concentration of substrate
C. increase in pH
D. increase in temperature

Excessive increase in temperature of medium causes the enzyme molecule to____________?

A. Activate
B. Unaffected
C. Denatured
D. None of these

Resolution power of a compound microscope is___________?

A. 2.0 ?m
B. 2-4 A
C. 24 ?m
D. 24 A

Extreme change in pH results in______________?

A. Change in ionization of amino acids at the active site of the enzyme
B. Change in the ionization of the substrate
C. Denaturation of the enzyme
D. Increase in the reaction rate

Who opposed the idea the cell is an empty space bounded by thick wall?

A. Lorenz Oken
B. Schwann
C. Robert Brown
D. Rudolph Virchow