Catalysis

The correct answer is 4


In

Therefore , x = 4

An allosteric site is a site on an enzyme, unrelated to its active site, which can bind an effector molecule.

To solve this problem, we need to evaluate the truthfulness of both given statements regarding chemical properties and reactions.

Statement I: Iron (III) catalyst, acidified and neutral have the ability to oxidize to independently.

Explanation: Iron (III) does not act as an oxidizing agent to oxidize iodide to iodine . Although acidified potassium dichromate can oxidize to , neutral potassium permanganate cannot effectively oxidize iodide ions in the neutral medium. Therefore, Statement I is false.

Statement II: Manganate ion is paramagnetic in nature and involves bonding.

Explanation: The manganate ion is actually diamagnetic because all of its electrons are paired in the tetrahedral structure. Furthermore, bonding, not , is typically involved. Therefore, Statement II is false.

Given the analyses, the correct option is: Both Statement I and Statement II are false. This conclusion is drawn based on the incorrect nature of both statements, as explained above.

The graph representing the variation of the rate of an enzyme-catalyzed reaction with substrate concentration follows Michaelis-Menten kinetics. Initially, the rate of reaction increases linearly with substrate concentration as active sites on the enzyme are free and readily available. However, as the enzyme becomes saturated with substrate, the rate reaches a maximum (V ) and remains constant, regardless of further increases in substrate concentration. Graph (c) best represents this relationship as it shows:
- An initial linear phase where the reaction rate increases.
- A plateau phase where the reaction rate becomes constant due to enzyme saturation.
The reaction rate of an enzyme-catalyzed process depends on the concentration of substrate. At low substrate concentrations, the reaction rate is proportional to the substrate concentration. At high concentrations, the enzyme becomes saturated, and the reaction rate levels off at V , indicating that all enzyme active sites are occupied.

The correct answer is 16.