278015
The class of enzymes that catalyze the removal of a group from a substrate without addition of water, leaving double bonds is
1 Transferases
2 Dehydrogenases
3 Hydrolases
4 Lyases
Explanation:
(d) Lyases are the enzyme.
NCERT Page-158 & 159 / N-117
BIOMOLECULES(NCERT)
278016
Which one of the following statements is incorrect?
1 In competitive inhibition, the inhibitor molecule is not chemically changed by the enzyme.
2 The competitive inhibitor does not affect the rate of breakdown of the enzyme-substrate complex.
3 The presence of the competitive inhibitor decreases the$\text{Km}$ of the enzyme for the substrate.
4 A competitive inhibitor reacts reversibly with the enzyme to form an enzyme- inhibitor complex.
Explanation:
(c) ${{K}_{m}}$ increases but ${{V}_{\text{max }\!\!~\!\!\text{ }}}$ remains the same in competitive inhibition. This is because, on slightly increasing the substrate concentration, the effect of inhibitor is removed.
278015
The class of enzymes that catalyze the removal of a group from a substrate without addition of water, leaving double bonds is
1 Transferases
2 Dehydrogenases
3 Hydrolases
4 Lyases
Explanation:
(d) Lyases are the enzyme.
NCERT Page-158 & 159 / N-117
BIOMOLECULES(NCERT)
278016
Which one of the following statements is incorrect?
1 In competitive inhibition, the inhibitor molecule is not chemically changed by the enzyme.
2 The competitive inhibitor does not affect the rate of breakdown of the enzyme-substrate complex.
3 The presence of the competitive inhibitor decreases the$\text{Km}$ of the enzyme for the substrate.
4 A competitive inhibitor reacts reversibly with the enzyme to form an enzyme- inhibitor complex.
Explanation:
(c) ${{K}_{m}}$ increases but ${{V}_{\text{max }\!\!~\!\!\text{ }}}$ remains the same in competitive inhibition. This is because, on slightly increasing the substrate concentration, the effect of inhibitor is removed.
