Question

How many different amino acids are there?
A. 4

B. 5

C. Thousands

D. 20

Answer 1

Answer:

B.5

Explanation:

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Answer 2

D. 20

Types of All Amino Acids. All The 20 amino acids are classified into two different amino acid groups. Essential amino acids and Non-essential amino acids together make up the 20 amino acids.