In the Lock-And-Key Model of Enzyme Action, the Enzyme Active

question 40

Multiple Choice

In the lock-and-key model of enzyme action, the enzyme active site is thought of as

• A)an area of the enzyme that can adjust to fit the substrate shape.
• B)a lock that bars a noncompetitive inhibitor from reacting.
• C)a hydrophilic area on the enzyme surface.
• D)a rigid, nonflexible shape that fits the substrate exactly.
• E)a key-like shape that fits into a pocket of the substrate surface.

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Definitions:

Regression SSR

The sum of squared deviations of predicted values from the mean of the dependent variable in regression analysis, indicating the variability explained by the regression.

Standard Error

The standard deviation of the sampling distribution of a statistic, typically the mean.

Dependent Variable

A variable in an experiment or study whose changes are subject to the variations in other variables (independent variables).

Predicted Values

The values estimated based on a statistical model that represents the expected outcome for a given set of input variables.