How many different tripeptides can be assembled using one molecule each of the amino acids glycine, glutamic acid, and lysine?

Question

Quizplus · Accepted Answer

Since there are three different amino acids and each can be placed in any of the three positions in a tripeptide, the number of different tripeptides that can be assembled is calculated by permutations of 3 items taken 3 at a time, which is 3! (3 factorial) = 3 x 2 x 1 = 6.

How Many Different Tripeptides Can Be Assembled Using One Molecule