Which One of the Following Is Correct

question 32

Multiple Choice

Which one of the following is correct?
(I) All enzymes are highly specific for the reactions they catalyze.
(II) Prosthetic groups are loosely associated with the polypeptide chain of an enzyme.
(III) If an enzyme-catalyzed reaction requires a group with a low pK to be deprotonated and a group with a higher pK to be protonated,the pH vs.rate curve will have a peak in the middle of the two pK values.
(IV) When comparing types of catalysis,the proximity effect provides the largest rate enhancement.

• A)I,II,III,IV
• B)I,III
• C)I
• D)III
• E)IV

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Definitions:

Labour Efficiency Variance

A measure used in cost accounting to evaluate the difference between the actual hours worked and the standard hours expected to produce a certain level of output.

Production Manager

The person responsible for overseeing the production process and ensuring that manufacturing runs smoothly and efficiently.

Management By Exception

A management system in which standards are set for various activities, with actual results compared to these standards. Significant deviations from standards are flagged as exceptions.

Actual

The real, measured or observed value of a quantity or cost, as opposed to estimated or budgeted figures.