Question

Which of the following is/are \( \alpha \)-amino acid?

• A. A
• B. B
• C. C
• D. D

Hint:

In \( \alpha \)-amino acids, the amino group is attached to the \( \alpha \)-carbon, which is adjacent to the carboxyl group.

Answer 1

The Correct Option is C

Step 1: Definition of \( \alpha \)-amino acids.
In \( \alpha \)-amino acids, the amino group is attached to the carbon atom that is adjacent to the carboxyl group. Both structures given in options (1) and (2) describe \( \alpha \)-amino acids.

Step 2: Conclusion.
The correct answer is both (1) and (2), corresponding to option (3).