Lesson 1: Amino Acid Classification

Question 1

What are the 2 new AA ?

Answer 1

1) Selenocystine
2) Pyrrolysine

21 & 22 respectively

Question 2

The alpha carbon atom is attacthed to______

Answer 2

1) Carboxyl Group
2) Amino Group( L-AA)
3) H-atom
4) Side Chain (R)

Question 3

How many ionizable groups does an AA have ?

Answer 3

2: Carboxyl COOH –> COO-
&
Amino NH2 –> NH3+

Question 4

What are the two types of AA ?

Answer 4

Essential & Non-essential

Nutritional

Question 5

Metabolic Fates of AA

Answer 5

1) Mixed
2) Ketogenic
3) Glucogenic

Question 6

Examples of Amid containing AA

Answer 6

1) Glutamine
2) Asparagine

Question 7

An AA that is both basic and heterocyclic

Answer 7

Histidine

Question 8

An AA that is both heterocyclic and Imino

Answer 8

Proline

Question 9

Basic AA examples

Answer 9

Arginine, Lysine, Histidine

Question 10

Sulfur Containing AAs

Answer 10

Cysteine, Methionine

Question 11

Hydroxy AAs

Answer 11

Serine, Tyrosine, Threonine

Question 12

An AA that is both Hydroxy and Aromatic

Answer 12

Tyrosine

Question 13

Aromatic AAs

Answer 13

Phenyl Alanine, Tyrosine, Tryptophan

Question 14

Branched Chain AAs

Answer 14

Valine, Leucine, Isoleucine

Question 15

Aliphatic AAs

Answer 15

Glycine and Alanine

Question 16

Heterocyclic AA

Answer 16

Histidine and Proline

Question 17

What is the simplest AA ?

Answer 17

Glycine

Question 18

T/F

We can not form a protein without knowing the nucleotides on the DNA.

Answer 18

True

Question 19

Acidic AAs

Answer 19

Aspartate, Glutamate

Question 20

Hydrophobic Amino Acids

contain hydrophobic side chains

Answer 20

1) The Aromatic aa
2) Aliphatic
3) Branched
4) Imino
5) Methionine

Question 21

The semi-polar aa

Answer 21

Tyrosine

Question 22

Positively charged polar aa

Answer 22

Basic aa

Question 23

Negatively Charged polar aa

Answer 23

Acidic aa

Question 24

Uncharged polar aa

Answer 24

1) Hydroxy
2) Sulfur Containing
3) Amide

Question 25

AAs with ketogenic metabolic fate

Answer 25

Lysine and Leucine

Question 26

AAs with mixed metabolic fate

Answer 26

Isoleucine and the aromatic amino acids

Question 27

AAs with glucogenic metabolic fates

Answer 27

1) Acidic
2) Amide
3) Histidine & Arginine (bases)
4) Sulfur Containing
5) Serine & Threonine(hydroxy)
6) Valine(branched)
7) Aliphatic
8) Imino
9) Heterocyclic

Question 28

Essential amino acids

Answer 28

1) All bases
2) Methionine
3) Threonine
4) Aromatic(except for tyrosine)
5) Branched amino acids

Question 29

Semi-essential amino acids

Answer 29

Arginine & Histidine

Question 30

Non-essential

Answer 30

1) Acidic aa
2) Amide containing aa
3) Cysteine
4) Serine
5) Tyrosine
6) Imino
7) Aliphatic