Module 1

Question 1

AA L

Answer 1

Leucine

Question 2

AA G

Answer 2

Glycine

Question 3

AA I

Answer 3

Isoleucine

Question 4

AA M

Answer 4

Methionine

Question 5

AA D

Answer 5

Aspartate

Question 6

AA E

Answer 6

Glutamate

Question 7

AA C

Answer 7

Cysteine

Question 8

AA N

Answer 8

Asparagine

Question 9

AA Q

Answer 9

Glutamine

Question 10

AA P

Answer 10

Proline

Question 11

AA S

Answer 11

Serine

Question 12

AA A

Answer 12

Alanine

Question 13

AA V

Answer 13

Valine

Question 14

AA F

Answer 14

Phenylalanine

Question 15

AA W

Answer 15

Tryptophan

Question 16

AA Y

Answer 16

Tyrosine

Question 17

AA K

Answer 17

Lysine

Question 18

AA R

Answer 18

Arginine

Question 19

AA H

Answer 19

Histidine

Question 20

AA T

Answer 20

Threonine

Question 21

T or F: ALL amino acids have STRICTLY one chiral center

Answer 21

F

Question 22

Which amino acid/s have two or more chiral centers?

Answer 22

Isoleucine - 2
Threonine - 2

Question 23

Which amino acid/s has NO chiral center?

Answer 23

Glycine

Question 24

This amino acid has the R group connected to the secondary carbon instead of the alpha-carbon

Answer 24

Proline

Question 25

Amino acids that are derived from external sources

Answer 25

Essential amino acids

Question 26

Amino acids that can be synthesized by the body

Answer 26

Nonessential amino acids

Question 27

What are the essential amino acids?

Answer 27

M I L K T H R W F V

Question 28

T or F: Throughout the human life, Arg and His are essential amino acids.

Answer 28

False. They are essential only in juveniles, not in adults.

Question 29

Tyrosine can be synthesized from which amino acid?

Answer 29

Phenylalanine

Question 30

Amino acids with nonpolar, hydrophobic chains as R group.

Answer 30

G A V L I F W P M

Question 31

Amino acids with polar, uncharged side chains as R group.

Answer 31

S T Y N Q C
(Stay in QC)

Question 32

Amino acids with polar, charged side chains as R group.

Answer 32

Basic
- K R H
Acidic
- D E

Question 33

~ Chain Questions ~
What amino acid has a thiol group (-SH)? The thiol group in this amino acid helps form which type of bond? This type of bond helps stabilize which level of protein structure?

Answer 33

Cysteine.
Disulfide bond.
Tertiary.

Question 34

Molecules which bear charged groups of opposite polarity.

Answer 34

Zwitterions

Question 35

Zwitterions are also called _______________.

Answer 35

Dipolar ions

Question 36

Which amino acids have ionizable groups in the R side chain?

Answer 36

C Y D E H K R

Question 37

It is the pH in which a molecule has no net charge.

Answer 37

Isoelectric point