Use the following to answer the questions below:
In each of the following multiple-choice questions, characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:
-Statements: (1) Activation of a zymogen produces a proteolytic enzyme.
(2) An enzyme-substrate complex is the final product in most enzyme-catalyzed reactions.
(3) Three forms of vitamin A are active in the human body.

Question

Quizplus · Accepted Answer

Statement 1 is true - activation of a zymogen (an inactive precursor) can produce a proteolytic enzyme (an enzyme that breaks down proteins).
Statement 2 is false - while an enzyme-substrate complex may form during an enzyme-catalyzed reaction, it is not always the final product. The final product can be a variety of molecules, depending on the reaction.
Statement 3 is also false - there are more than three forms of vitamin A, but only one of them (retinol) is active in the human body.

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