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
Related Mcqs:
- A chemical substance that reacts with enzyme but is not transformed into product and thus blocking active site is called__________?
A. Substrate
B. Co-factor
C. Inhibitor
D. Promotor - 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 - 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 - Active site of Rubisco is evolved to bind?
A. CO2
B. O2
C. H2O
D. All of these - Active transport is dependent on____________?
A. Photosynthesis
B. Respiration
C. Photophosporylation
D. None of these - A pressure created by active secretion of salts and other solutes from other cells into xylem sap is called___________?
A. Transpiration pull
B. Root pressure
C. Osmotic pressure.
D. None of these - Steroids, a biologically active organic compound, are derived from __________?
A. Hormones
B. Chemicals
C. Cholesterol
D. CarbohydratesSubmitted by: Lubaba
- Attachment of the bacteriophage with the receptor site on the bacterial cell wall involves_______________?
A. Strong covalent bond between virion and the receptor site.
B. Week chemical unior between them
C. Both A and B depending upon the phage
D. None of these - The site/s where most of the uptake of water and minerals take place is/are__________?
A. Root hairs
B. Root cells
C. Underground stem
D. All of these - On which of the following site the posterior pituitary hormone acts predominantly?
A. Proximal convoluted tubule
B. Descending limb of loop of Henle
C. Ascending limb of loop of Henle
D. Collecting tubules
