Essential Amino Acids

Humans require 9 essential amino acids that must be obtained from the diet. These amino acids are considered “essential“ because the body cannot synthesize them in sufficient quantities, and they must be ingested through food. The 9 essential amino acids are: Histidine Isoleucine Leucine Lysine Methionine Phenylalanine Threonine Tryptophan Valine These amino acids are crucial for various bodily functions, including protein synthesis, tissue repair, and nutrient absorption. Problems: How many standard amino acids are used to build proteins in humans? A) 20 B) 22 C) 64 D) 100 Which amino acid is essential for humans and must be obtained from the diet? A) Glycine B) Alanine C) Lysine D) Proline