The structure of an enzyme is altered by
A. Irreversible inhibitor
B. Reversible inhibitor
C. Competitive inhibitor
D. Non-competitive inhibitor
The structure of an enzyme is altered by Read More »
Biology
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
Excessive increase in temperature of medium causes the enzyme molecule to Read More »
Resolution power of a compound microscope is___________?
A. 2.0 ?m
B. 2-4 A
C. 24 ?m
D. 24 A
Resolution power of a compound microscope is___________? Read More »
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
Extreme change in pH results in Read More »
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
Who opposed the idea the cell is an empty space bounded by thick wall? Read More »
If more substrate to already occurring enzymatic reaction is added and there is no effect on the rate of the reaction what is the form given to this situation
A. Saturation
B. Denaturation
C. Composition
D. Inhibition
Factory of Ribosomal systhesis is
A. Cytoplasm
B. Nucleus
C. Nucleolus
D. Endoplasmic reticulum
Factory of Ribosomal systhesis is Read More »
The active site of an enzyme
A. Never changes
B. Forms no chemical bond with substrate
C. Determined by structure and the specificity of the enzyme
D. They are non specific in their action
The active site of an enzyme Read More »