Amino Acids

Question 1

Glycine

Answer 1

Gly/G nonpolar, not chiral

Question 2

Alanine

Answer 2

Ala/A nonpolar, has methyl group

Question 3

Valine

Answer 3

Val/V nonpolar, very hydrophobic and has two methyl groups 

Question 4

Leucine

Answer 4

Leu/L nonpolar, very hydrophobic, 2 methyl groups

Question 5

Isoleucine

Answer 5

Ile/I nonpolar, very hydrophobic, 2 methyl groups, isomer of leucine

Question 6

Proline

Answer 6

Pro/P, nonpolar, side chain bonds twice, not aromatic

Question 7

Phenylalanine

Answer 7

Phe/F, nonpolar, aromatic ring

Question 8

Tyrosine

Answer 8

Tyr/Y, uncharged polar, aromatic ring with hydroxide ion

Question 9

Tryptophan

Answer 9

Trp/W nonpolar, two aromatic rings

Question 10

Serine

Answer 10

Ser/S alcohol amino acid, uncharged polar, hydroxyl group

Question 11

Threonine

Answer 11

Thr/T alcohol amino acid, uncharged polar, have hydroxyl group

Question 12

Histidine

Answer 12

His/H, positively charged polar

Question 13

Lysine

Answer 13

Lys/K positively charged polar

Question 14

Arginine

Answer 14

Arg/R positively charged polar

Question 15

Methionine

Answer 15

Met/M nonpolar, cannot form sulphur sulphur bonds

Question 16

Cysteine

Answer 16

Cys/C nonpolar, form sulphur sulphur bridge and lose electrons to become Cystine (polar)

Question 17

Aspartate

Answer 17

Asp/D, negatively charged polar

Question 18

Glutamate

Answer 18

Glu/E negatively charged polar

Question 19

Asparagine

Answer 19

Asn/N uncharged polar

Question 20

Glutamine

Answer 20

Gln/Q uncharged polar

Question 21

Selenocysteine

Answer 21

Sec/U nonpolar (?)