How many possible sequences can be made for a polypeptide with five different amino acids?
A)5
B)25
C)32
D)120
E)none of these

Question

Quizplus · Accepted Answer

For a polypeptide with five different amino acids, the number of possible sequences can be calculated using the formula n!/(n-r)!, where n is the total number of amino acids and r is the number of amino acids in the sequence. In this case, n=5 and r=5, so we have 5!/(5-5)! = 5! = 120 possible sequences. Therefore, the best choice is D, with 120 possible sequences.

How Many Possible Sequences Can Be Made for a Polypeptide