Question

D-Alanine and L-Alanine are technically known as

• A. anomers
• B. enantiomers
• C. epimers
• D. polymer

Hint:

D and L = Mirror Images = Enantiomers.

Answer 1

The Correct Option is B

Step 1: Concept
Isomers that are non-superimposable mirror images of each other are called enantiomers.

Step 2: Meaning
Alanine has a chiral center at the alpha-carbon. The D and L forms represent the two possible spatial arrangements around this center.

Step 3: Analysis
Because they are mirror images and share the same physical properties (except for optical rotation), they are enantiomers. Epimers differ at only one of several chiral centers; anomers are a specific type of epimer found in cyclic sugars.

Step 4: Conclusion
D and L amino acids are enantiomers. Final Answer: (B)