421. Factory of Ribosomal systhesis is__________?
A. Cytoplasm
B. Nucleus
C. Nucleolus
D. Endoplasmic reticulum

422. 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

423. 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

424. 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

425. Resolution power of a compound microscope is___________?
A. 2.0 ?m
B. 2-4 A
C. 24 ?m
D. 24 A

426. Excessive increase in temperature of medium causes the enzyme molecule to____________?
A. Activate
B. Unaffected
C. Denatured
D. None of these

427. 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

428. 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

429. The structure of an enzyme is altered by____________?
A. Irreversible inhibitor
B. Reversible inhibitor
C. Competitive inhibitor
D. Non-competitive inhibitor

430. Malonic acid is an example of____________?
A. Irreversible inhibitor
B. Reversible inhibitor
C. Competitive inhibitor
D. Non-competitive inhibitor

NOTE
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PLEASE COMMENT WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION IN COMMENT BOX.
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