A chemical substance which can react (in place of substrate) with the enzyme but is not transformed into product/s and thus blocks the active site temporarily or permanently is called_______________?
(A) Co-enzyme
(B) Blocker
(C) Inhibitor
(D) Cofactor
A substance which binds at the active site of the enzyme but does not result in the formation of the products is called________________?
(A) Irreversible inhibitor
(B) Reversible inhibitor
(C) Competitive inhibitor
(D) Non-competitive inhibitor
Which of the statement about cell membrane is not true?
(A) It contains protein molecules embedded in lipid bilayer
(B) It is a differentially permeable membrane.
(C) It contains charged pores thus ions being charged particles cross cell membrance much easier than neutral particles.
(D) It may get infolded to engulf solid or liquid material.
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
Which one is the basic element of organic compounds _________________?
(A) Oxygen
(B) Hydrogen
(C) Sulphur
(D) Carbon
The bond formed when two or more atoms complete their electron shells by sharing electrons is called_____________?
(A) Ionic bond
(B) Hydrogen bond
(C) Covalent bond
(D) Electrovalent bond