An Enzyme Is Optimally Active at Neutral PH, but Activity

question 42

Multiple Choice

An enzyme is optimally active at neutral pH, but activity drops off sharply if the pH is changed, This enzyme is likely to have what in the active site?

• A) the side chains of aspartate and glutamine
• B) two histidine amino acid side chains
• C) a glycine amino acid
• D)polar side chains
• E) nonpolar side chains

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Definitions:

Population

The total number of individuals or entities within a specified area or group which could be studied or observed.

Internal Validity

The characteristic of a study that allows us to conclude that the manipulation of the independent variable caused the observed changes in the dependent variable.

Independent Variable

The variable in an experiment that is manipulated by the researcher to examine its impact on the dependent variable.

Dependent Variable

In research, the variable being tested and measured, expected to change as a result of manipulations to the independent variable.