Amino Acid Groups

Question 1

Glycine (Gly, G)

Answer 1

Hydrophobic

Smallest R group

Question 2

Alanine (Ala, A)

Answer 2

Hydrophobic

Question 3

Valine (Val, V)

Answer 3

Hydrophobic
Branched
Essential

Question 4

Leucine (Leu, L)

Answer 4

Hydrophobic
Branched
Essential

Question 5

Isoleucine (Ile, I)

Answer 5

Hydrophobic
Branched
Essential

Question 6

Phenylalanine (Phe,F)

Answer 6

Hydrophobic
aromatic ring
Essential

Question 7

Tryptophan (Trp, W)

Answer 7

Hydrophobic
indole ring
Essential

Question 8

Asparagine (Asn, N)

Answer 8

Hydrophilic

Partial + charge

Question 9

Glutamine (Glu, Q)

Answer 9

Hydrophilic

Partial + charge

Question 10

Serine (Ser, S)

Answer 10

Hydrophilic
Partial - charge
May be phosphorylated

Question 11

Threonine (Thr, T)

Answer 11

Hydrophilic
Partial - charge
May be phosphorylated
Essential

Question 12

Aspartic acid (Asp, D)

Answer 12

Charged

Negative charge

Question 13

Glutamic acid (Glu, E)

Answer 13

Charged

Negative charge

Question 14

Lysine (Lys, K)

Answer 14

Charged
Positive charge
Essential

Question 15

Arginine (Arg, R)

Answer 15

Charged
Positive charge
Essential* only in children

Question 16

Tyrosine (Tyr, Y)

Answer 16

Charged
Partial or full negative charge
May be phosphorylated

Question 17

Histidine (His, H)

Answer 17

Special
Partial or full positive charge
Essential

Question 18

Cysteine (Cys, C)

Answer 18

Special

Disulphide binds

Question 19

Methionine (Met, M)

Answer 19

Special

Essential

Question 20

Proline (Pro, P)

Answer 20

Special

Found at bends in protein structure