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Cycloserine Stereochemistry Quiz

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Questions and Answers

What is the active form of cycloserine and what is its mechanism of action?

The (R)-enantiomer does not inhibit the activity of D-alanine racemase, but has psychoactive effects.

The (S)-enantiomer inhibits the activity of D-alanine racemase, which is essential for the synthesis of bacterial cell walls.

The (R)-enantiomer inhibits the activity of D-alanine racemase, which is essential for the synthesis of bacterial cell walls. (correct)

The (S)-enantiomer does not inhibit the activity of D-alanine racemase, but has psychoactive effects.

What are the bond angles between the carbon and nitrogen atoms in the cyclopropane ring of cycloserine?

Approximately 90 degrees

Approximately 120 degrees

Approximately 109.5 degrees (correct)

Approximately 180 degrees

What is the difference between the two possible stereoisomers of cycloserine?

They have different configurations of the amino and hydroxyl groups on the cyclopropane ring. (correct)

They have the same configuration of the amino and hydroxyl groups on the cyclopropane ring.

They have different chemical formulas.

They have different mechanisms of action.

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Description

"Test your knowledge of Cycloserine's stereochemistry with this quiz! Learn about the two possible stereoisomers and the active form of the drug. Get ready to impress with your understanding of this cyclic amino acid's chemical formula and properties."