Amino Acids

Question 1

Non-polar, aliphatic

Answer 1

Glycine, Alanine, Proline, Valine, Leucine, Isoleucine

Question 2

Aromatic

Answer 2

(from least to most polar)
Phenylalanine, Tyrosine, Tryptophan

Question 3

Polar, uncharged

Answer 3

Asparagine, Glutamine, Serine, Threonine

Question 4

Sulfur-containing

Answer 4

Methionine, Cysteine

Question 5

Charged

Answer 5

Aspartate, Glutamate, Arginine, Lysine, Histidine

Question 6

Non-polar, aliphatic (branched chain only)

Answer 6

Valine, Leucine, Isoleucine

Question 7

Glycine (gly)

Answer 7

R-group = -H
Non-polar, aliphatic

Question 8

Alanine (ala)

Answer 8

R-group = -CH₃
Non-polar, aliphatic

Question 9

Proline (pro)

Answer 9

R-group = -(CH₂)₃
Non-polar, aliphatic (cyclic, with the alpha carbon being in the ring and the amine group being -NH)

Question 10

Valine (val)

Answer 10

R-group = -CH(CH₃)₂
Non-polar, aliphatic (branched R-group)

Question 11

Leucine (leu)

Answer 11

R-group = -CH₂CH(CH₃)₂
Non-polar, aliphatic (branched R-group)

Question 12

Isoleucine (ile)

Answer 12

R-group = -CH(CH₃)CH₂CH₃
Non-polar, aliphatic (branched R-group)

Question 13

Phenylalanine (phe)

Answer 13

R-group = -CH₂(C₆H₆)
Aromatic (least polar)

Question 14

Tyrosine (tyr)

Answer 14

R-group = –CH₂(C₆H₆)OH
Aromatic

Question 15

Tryptophan (trp)

Answer 15

R-group = -CH₂C=CHNH(C₆H₆)
Aromatic (most polar)

Question 16

Asparagine (asn)

Answer 16

R-group = -CH₂CONH₂
Polar, uncharged

Question 17

Glutamine (gln)

Answer 17

R-group = -CH₂CH₂CONH₂
Polar, uncharged

Question 18

Serine (ser)

Answer 18

R-group = -CH₂OH
Polar, uncharged

Question 19

Threonine (thr)

Answer 19

R-group = CHOH(CH₃)
Polar, uncharged

Question 20

Methionine (met)

Answer 20

R-group = -CH₂CH₂SCH₃
Sulfur-containing

Question 21

Cysteine (cys)

Answer 21

R-group = -CH₂SH
Sulfur-containing

Question 22

Aspartate (asp)

Answer 22

R-group = -CH₂COO⁻
Charged (negative)

Question 23

Glutamate (glu)

Answer 23

R-group = -CH₂CH₂COO⁻
Charged (negative)

Question 24

Arginine (arg)

Answer 24

R-group = -(CH₂)₃NHC(=NH₂⁺)NH₂
Charged (positive)

Question 25

Lysine (lys)

Answer 25

R-group = -(CH₂)₄NH₃⁺
Charged (positive)

Question 26

Histidine (his)

Answer 26

R-group = CH₂C=CHN=CHNH
Charged (positive), cyclic*

Question 27

Three letter abbreviation for:
Glycine

Answer 27

gly

Question 28

Three letter abbreviation for:
Alanine

Answer 28

ala

Question 29

Three letter abbreviation for:
Proline

Answer 29

pro

Question 30

Three letter abbreviation for:
Valine

Answer 30

val

Question 31

Three letter abbreviation for:
Leucine

Answer 31

leu

Question 32

Three letter abbreviation for:
Isoleucine

Answer 32

ile

Question 33

Three letter abbreviation for:
Phenylalanine

Answer 33

phe

Question 34

Three letter abbreviation for:
Tyrosine

Answer 34

tyr

Question 35

Three letter abbreviation for:
Tryptophan

Answer 35

trp

Question 36

Three letter abbreviation for:
Asparagine

Answer 36

asn

Question 37

Three letter abbreviation for:
Glutamine

Answer 37

gln

Question 38

Three letter abbreviation for:
Serine

Answer 38

ser

Question 39

Three letter abbreviation for:
Threonine

Answer 39

thr

Question 40

Three letter abbreviation for:
Methionine

Answer 40

met

Question 41

Three letter abbreviation for:
Cysteine

Answer 41

cys

Question 42

Three letter abbreviation for:
Aspartate

Answer 42

asp

Question 43

Three letter abbreviation for:
Glutamate

Answer 43

glu

Question 44

Three letter abbreviation for:
Arginine

Answer 44

arg

Question 45

Three letter abbreviation for:
Lysine

Answer 45

lys

Question 46

Three letter abbreviation for:
Histidine

Answer 46

his