The substrate concentration at which the chemical reaction catalyzed by an enzyme attains half of its maximum velocity is termed as
A
1/2 `K_m`
B
`K_m`
C
1/2 `V_(max)`
D
`V_(max)`
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Assertion : With the increase in substrate concentration, the velocity of the enzymatic reaction rise at first. The reaction ultimately reaches a maximum velocity which is not exceeded by any further rise in concentration of the substrate. Reason : The enzyme molecules are fewer than substrate molecules and after saturation of thes molecules, there are no free enzymes to bind with the additional substrate molecules.
