Biochemistry - Structure and Properties of Amino Acids - Discussion

Discussion Forum : Structure and Properties of Amino Acids - Section 1 (Q.No. 31)
31.
The α-amino acids have a carboxyl group with a pK around __________ , and an amino group with a pK near __________ .
1.1, and 12.1
6.5, and 8.0
3.3, and 10.5
2.2, and 9.4
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
3 comments Page 1 of 1.

Rosalind said:   8 years ago
This answer is inaccurate. Typically the C terminus has a pka around 3 and the N terminus has a pka around 8. Although these are not exact numbers these are the relative values used.

Chetanya jain said:   8 years ago
It should be (A). As their PKA values lie between 1.03 - 12.1.

John said:   7 years ago
The pka of alpha amino group is 9 and pka of carboxyl group is 2. The answer is D.

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