amino acids quiz 4

Question 1

Glycine

Answer 1

Gly
G
R group = H

Question 2

alanine

Answer 2

Ala
A
R group = CH3

Question 3

valine

Answer 3

Val
V
R group = CH(CH3)2

Question 4

leucine

Answer 4

Leu
L
R group = CH2- CH(CH3)2

Question 5

isoleucine

Answer 5

Ile
I
R group =C(H, CH3)- CH2 - CH3

Question 6

methionine

Answer 6

Met
M
R group= CH2-CH2-S-CH3

Question 7

Proline

Answer 7

Pro
P
R group= CH2-CH2-CH2(attached to amino)

Question 8

phenylalanine

Answer 8

Phe
F
R group= CH2- Benzene ring

Question 9

tryptophan

Answer 9

Trp
W
r group = look it up

Question 10

Serine

Answer 10

Ser
S
r group= CH2-OH

Question 11

threonine

Answer 11

Thr
T
r group= C(H,OH)- CH3

Question 12

asparagine

Answer 12

Asn
N
r group= CH2- C(=O, NH2)

Question 13

glutamine

Answer 13

GLN
Q
r group= CH2-CH2-C(=O,NH2)

Question 14

Tyrosine

Answer 14

Tyr
Y
pKa= 10.46 [phenol]
r group= CH2-BENZENE-OH

Question 15

cysteine

Answer 15

Cys
C
pKa= 8.37 [sulfhydryl]
r group = CH2-SH

Question 16

lysine

Answer 16

Lys
K
pKa= 10.54 [e-NH3]
r group = CH2-CH2-CH2-CH2-NH3

Question 17

arginine

Answer 17

Arg
R
pKa= 12.48 (guanidino)
r group= CH2-CH2-CH2-NH-C(=NH2,NH2)

Question 18

histidine

Answer 18

His
H
pKa= 6.04 [imidazole]
r group= look it up

Question 19

aspartic acid

Answer 19

Asp
D
pKa= 3.90 [B-COOH]
r group- CH2-C(=O, O-)

Question 20

glutamic acid

Answer 20

Glu
E
pKa= 4.07 [y-COOH]
r group= CH2-CH2-C(=O, O-)