The Following Questions Are Based on the Reaction a

question 27

Multiple Choice

The following questions are based on the reaction A + B → C + D shown in Figure 8.2.


-Which best describes the reaction?

• A)The amount of free energy initially present in the reactants is indicated by "a."
• B)The amount of free energy present in the products is indicated by "e."
• C)The amount of free energy released as a result of the noncatalyzed reaction is indicated by "c."
• D)The amount of free energy released as a result of the catalyzed reaction is indicated by "d."
• E)The difference between "b" and "c" is the activation energy added by the presence of the enzyme.

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Definitions:

Confounding Variable

A variable that is not controlled in a research investigation. In an experiment the experimental groups diĉer onboth the independent variable andthe confounding variable.

Internal Validity

Refers to how well an experiment is conducted and whether it measures what it's supposed to measure, without being confounded by other factors.

Independent Variable

A variable in an experiment that is manipulated to observe its effects on a dependent variable.

Internal Validity

The extent to which a study provides evidence that a causal relationship exists between the variables it examines, free from confounding factors.