20 amino acids

Question 1

Classification of the side chains

Answer 1

• Non-polar
• Acidic
• Basic
• Polar uncharged

Question 2

Amino acids with non polar side chains

-9

Answer 2

GAVE YOU LIP PTM

Glycine, alanine, valine, leucine, isoleucine, proline, methionine, phenylalanine, tryptophan

Question 3

Proline differs from other amino acids because

Answer 3

• It contains a five- membered ring structure.

- It contains a secondary amino group.

Question 4

Amino acids with uncharged polar side chains

-6

Answer 4

GIULIA AMA COMER TAPIOCA SEM TOFU

Glutamine, asparagine, cysteine, tyrosine, serine, threonine

Question 5

Amino acids with acidic side chains

-2

Answer 5

AS GOD

Aspartic acid and glutamic acid

Question 6

Amino acids with basic side chains

-3

Answer 6

LOVES HIS ART

Lysine, histidine, arginine

Question 7

Meaning when the pH = pKa

Answer 7

It reached maximum buffering capacity

Question 8

What is a buffer solution and what is made of

Answer 8

A solution that resists a change in pH, it is made of a weak acid + its conjugate base

Question 9

Titration of an amino acid
Sequence of events
Net charges

Answer 9

1. Dissociation of the carboxyl group - it looses its hydrogen. Net charge = +1
2. Dissociation of amino group - amino group looses its hydrogen. Net charge = -1

Question 10

Amino acids with non polar side chains (9)

3 letters and 1 letter abbreviation

Answer 10

GAVE YOU LIP PTM
Gly - G Leu - L Met - M
Ala - A Ile - I Try - W
Val - V Pro - P Phe - F

Question 11

Amino acids with uncharged polar side chains

3 letters and 1 letter abbreviation

Answer 11

GIULIA AMA COMER TAPIOCA SEM TOFU
Gln - Q Tyr - Y
Asn - N Ser - S
Cys - C Thr - T

Question 12

Amino acids with acidic side chains

3 letters and 1 letter abbreviation

Answer 12

AS GOD
Asp - D
Glu - E

Question 13

Amino acids with basic side chains

3 letters and 1 letter abbreviation

Answer 13

LOVES HIS ART
Lys - K
His - H
Arg - R