A sequence of amino acids may end in either an amino group (—NH2) or

1.	A sequence of amino acids may end in either an amino group (—NH2) or a carboxyl group (—COOH). What is the theoretical number of chemically different dipeptides that may be assembled from 20 different amino acids?(a) 40(b) 80(c) 160(d) 400
Answer» Answer is : (d) 400 A dipeptide is made up of 2 amino acids which may be same or different. The total possible number of different dipeptides that may be assembled from 20 different amino acids will thus be 20ⁿ= 20² = 20 x 20 = 400

A sequence of amino acids may end in either an amino group (—NH2) or a carboxyl group (—COOH). What is the theoretical number of chemically different dipeptides that may be assembled from 20 different amino acids?(a) 40(b) 80(c) 160(d) 400

Answer»

Answer is : (d) 400

A dipeptide is made up of 2 amino acids which may be same or different. The total possible number of different dipeptides that may be assembled from 20 different amino acids will thus be

20ⁿ= 20² = 20 x 20 = 400

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A sequence of amino acids may end in either an amino group (—NH2) or a carboxyl group (—COOH). What is the theoretical number of chemically different dipeptides that may be assembled from 20 different amino acids?(a) 40(b) 80(c) 160(d) 400

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