Chapter 3

Question 1

differentiate between essential and nonessential amino acids

Answer 1

non essential amino acids can be synthesized from molecules in the body
essential amino acids must be consumed in the diet

Question 2

what three amino acids have aromatic components in their side chains?

Answer 2

phenylalanine, tyrosine, and tryptophan

Question 3

what amino acid side chains are capable of ionization

Answer 3

aspartate, glutamate, histidine, cyteine, tyrosine, lysine, and arginine

Question 4

which amino acid contains weak acidic phenol-like R group?

Answer 4

tyrosine

Question 5

what are the four groups of amino acids?

Answer 5

hydrophobic, polar, acidic, basic

Question 6

how do side chains of amino acids differ?

Answer 6

size, shape and prescence of functional groups

Question 7

what are amino acids consisted of?

Answer 7

central carbon, amino group, carboxylic group, hydrogen group, and side chain

Question 8

are side chains chiral or achiral?

Answer 8

chiral except glycine

Question 9

how many amino acids can humans make?

Answer 9

humans can make 11 amino acids and 9 must be generated through diet