How many unique tripeptides can be made from two molecules of valine (val)and one molecule of alanine (ala)?
A) One
B) Two
C) Three
D) Four
E) Five

Question

How many unique tripeptides can be made from two molecules of valine (val)and one molecule of alanine (ala)?
A) One
B) Two
C) Three
D) Four
E) >Five

Quizplus · Accepted Answer

The possible combinations of a tripeptide made from two molecules of valine and one molecule of alanine are: 
1. Val-Ala-Val 
2. Val-Val-Ala 
3. Ala-Val-Val

Therefore, there are three unique tripeptides that can be made.

How Many Unique Tripeptides Can Be Made from Two Molecules