Amino Acids-Fill the blank

Question 1

Amino acids have… charges at a low pH and …. charges at a high pH

Answer 1

Positive, negative

Question 2

All amino acids are chiral EXCEPT ….

Answer 2

Glycine

Question 3

…. has the smallest R group and is thus the smallest amino acid

Answer 3

Glycine

Question 4

…. , …. , and …. , all have large ring structures in their R groups.

Answer 4

Phenylalanine, tyrosine, tryptophan

Question 5

…., …., …., and …. have hydrocarbon R groups, and are thus ….

Answer 5

Alanine, valine, leucine, isoleucine, non-polar

Question 6

…., …., and …. have basic R-groups

Answer 6

Histidine, lysine, arginine

Question 7

…. and …. are acidic

Answer 7

Aspartic acid, glutamic acid

Question 8

…. is the only amino acid who’s R group is covalently linked to the amino group of the amino acid

Answer 8

Proline

Question 9

…. forms disulfide bonds with other …. residues.

Answer 9

Cysteine