The First Step in the De Novo Biosynthesis of IMP

question 65

Multiple Choice

The first step in the de novo biosynthesis of IMP is a reaction between glutamine and PRPP.Which statement is not true about this reaction?

• A)An amine group is attached to the anomeric carbon atom of the ribose ring.
• B)The configuration of the anomeric carbon atom is inverted from β to α.
• C)A pyrophosphate is lost from PRPP.
• D)The reaction is catalyzed by glutamine-PRPP aminotransferase.

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Definitions:

Indexing

Avoiding generalizations by using statements that separate one situation, person, or example from another.

Arbitrary

Refers to decisions or actions not based on system or rules but rather on personal discretion or random choice.

Context Bound

Referring to communication or behavior that is heavily influenced by its surrounding circumstances, environment, or cultural setting.

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Pertaining to material objects, physical construction, or specific, tangible ideas as opposed to abstract concepts.