BIOCHEMISTRY
ENZYMES AND METABOLISM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Velocity is the rate of product formation over time
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Velocity is a measurement of rate
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Velocity measures the depletion of the substrate
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Velocity measures the formation of the product
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Detailed explanation-1: -The reaction velocity (v) equals (Vmax [A])/(Km + [A]) as described by the Michaelis-Menten equation where Vmax is the maximal velocity, [A] is the substrate concentration, and Km is the Michaelis constant, or the substrate concentration at half maximal velocity.
Detailed explanation-2: -A change in pH of enzyme catalyzed reaction markedly affects its velocity and bell shaped curve is obtained if enzyme activity is plotted against factors such as pH and temperature.
Detailed explanation-3: -The effect of substrate concentration on enzyme kinetics are as follows: The rate or velocity of the reaction increases initially with an increase in the substrate. As the reaction proceeds, at high concentrations of the substrates, the enzyme gets saturated with substrate molecules and the velocity decreases.