BIOLOGY
ENZYMES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Beyond the optimum pH, the rate of enzyme activity decreases
|
|
|
Extreme changes in pH of the medium denatures the enzymes
|
|
|
Beyond the optimum pH, the rate of enzyme activity increases
|
|
|
Optimum pH is the pH at which the the maximum rate of reaction occurs
|
Detailed explanation-1: -Answer and Explanation: The correct answer: The optimum pH for an enzyme is d) Where it works best. Optimum pH for an enzyme is the specific pH at which the enzyme can work the best.
Detailed explanation-2: -Enzyme activity is at its maximum value at the optimum pH. As the pH value is increased above or decreased below the optimum pH the enzyme activity decreases.
Detailed explanation-3: -The Effect of pH on Enzymes The rate of enzymatic reaction depends on pH of the medium. Each enzyme has an optimum pH, where the rate of enzymatic reaction is maximum. At higher or lower pH, the rate of an enzymatic reaction decreases. For most enzymes, the optimum pH lies in the range from pH 5 to pH 9.
Detailed explanation-4: -Although some enzymes exhibit activity in a broad range of pH [1–3], many show maximal activity at a narrow pH range [4–6], referred to as the pH optimum.