Test Index

Biomolecules Part 2

Section: Chemistry

Question : 14 of 100

Marks: +1, -0

The number of possible tripeptides formed involving alanine (ala), glycine (gly) and valine (val), where no amino acid has been used more than once is:

[24 Jan 2026 Shift 2]

Validate

Solution:

Concept:

The number of distinct tripeptides formed from three different amino acids, each used exactly once, is given by the number of permutations of the three amino acids.

Explanation:

We have three distinct amino acids: alanine, glycine, and valine.

Since no amino acid is repeated, each tripeptide is a different arrangement of these three residues.

The total number of permutations of 3 distinct items is

3! = 3 \times 2 \times 1 = 6

Therefore, there are 6 possible tripeptide sequences.

Answer:

D. 6

Go to Question:

Prev Question

Next Question