Question

The variation of the rate of an enzyme catalyzed reaction with substrate concentration is correctly represented by graph

• A.
• B.
• C.
• D.

Hint:

The rate of enzyme reaction is directly proportional to the substrate concentration.

Answer 1

The Correct Option is C

The correct answer is Option C) 

The curve depicts how the concentration of the substrate affects the rate of an enzyme-catalyzed reaction. 

• It demonstrates that raising the substrate concentration raises the rate of reaction up until a point when all of the enzyme molecules' active sites are saturated with substrates, at which point raising the substrate concentration has no impact on the rate of reaction.
• The reaction rate would be slower if an enzyme inhibitor were present.
• The graph of the free energy level of the reaction mixture to the reaction's progression depicts the development of the enzyme complex.

Factors Affecting Enzyme Catalysis

• Above and below optimum pH and temperature ranges, the activity of the specific enzyme decreases.
• At first, as the substrate concentration rises, the reaction's speed increases, and then it reaches a maximum speed beyond which it can no longer go any faster.
• In order to accept certain modulator or effector molecules that eventually induce conformational changes in these allosteric enzymes and may possibly influence their catalytic activity, some enzymes contain an additional binding site known as an allosteric site or regulatory site.
• Certain inhibitor compounds have been shown to have a significant impact on the activity of a few different enzymes. These molecules attach to the enzymes either covalently (irreversible) or non-covalently (reversible), both of which reduce the catalytic activity of the enzyme.

Enzyme Kinetics

Enzyme kinetics, which primarily applies the Michaelis-Menten equation and is illustrated by the following equation and graph, determines the rate of an enzyme-catalyzed reaction and the creation of its products.

v = (V_max [S])/(K_m + [S])

V_max = The enzyme can only react at its highest rate under the present circumstances when the substrate concentration is infinite.. [S] = substrate concentration.

Also Read: 

Related Topics
Enzyme Properties	Enzyme Cofactors	Allosteric Enzymes