Amino Acids

Question 1

Alanine

Answer 1

A

Question 2

Arginine

Answer 2

R

Question 3

Asparagine

Answer 3

N

Question 4

Aspartic Acid

Answer 4

D

Question 5

Cysteine

Answer 5

C

Question 6

Glutamine

Answer 6

Q

Question 7

Glutamic Acid

Answer 7

E

Question 8

Glycine

Answer 8

G

Question 9

Histidine

Answer 9

H

Question 10

Isoleucine

Answer 10

I

Question 11

Leucine

Answer 11

L

Question 12

Lysine

Answer 12

K

Question 13

Methionine

Answer 13

M

Question 14

Phenylalanine

Answer 14

F

Question 15

Proline

Answer 15

P

Question 16

Serine

Answer 16

S

Question 17

Threonine

Answer 17

T

Question 18

Tryptophan

Answer 18

W

Question 19

Tyrosine

Answer 19

Y

Question 20

Valine

Answer 20

V

Question 21

Which amino acid(s) have 2 chiral centers?

Answer 21

I and T

Question 22

Which amino acid(s) have no chiral center?

Answer 22

G

Question 23

True or false - every amino acid except I, T, and G has one chiral center.

Answer 23

True

Question 24

True or false - Phenylalanine has an absorption at 258 nm, but it does not show up because it is much less than Glycine and Threonine.

Answer 24

False. Because it is much less than Y and W

Question 25

The ____ side chains of amino acids absorb UV light

Answer 25

aromatic

Question 26

True or false - Biologically active amino acid derivatives include GABA, Histamine, and Dopamine.

Answer 26

True

Question 27

True or false - Dopamine is synthesized in 2 enzymatic steps from tyrosine via L-DOPA.

Answer 27

True

Question 28

True or false - Deficiencies in dopamine production do not correlate with Parkinson’s disease.

Answer 28

False

Question 29

How is Parkinson’s disease treated?

Answer 29

L-DOPA is administered to give some relief

Question 30

What are disulfide bridges?

Answer 30

A covalent bond between 2 sulfur atoms of 2 cysteine residues

Question 31

What do protein kinases do?

Answer 31

Attach phosphoryl groups to Ser, Thr, and Tyr side chains

Question 32

What do protein phosphatases do?

Answer 32

Remove phosphoryl groups from Ser, Thr, and Tyr side chains