AMINO ACIDS

Question 1

What do you call the characteristic pH of amino acid wherein the net electric charge is zero?

Answer 1

Isoelectric point

Question 2

Dopamine is the converted to noradrenaline by

Answer 2

Hydroxylating the β - carbon

Question 3

What does the N stands for in the name of the enzyme Phenylalanine – N – methyl transferase?

Answer 3

The N indicates that the transfer is on the nitrogen group

Question 4

This is formed when a methyl group was added to the amine group of phenylethanolamine

Answer 4

Noradrenaline

Question 5

It is the hormone formed in the hydroxylation of the β – carbon of (Y)

Answer 5

Noradrenaline

Question 6

It is the hormone that controls the pressure of blood through the kidneys

Answer 6

Dopamine

Question 7

In the amine form of DOPA, what molecule was removed to become dopamine?

Answer 7

OH

Question 8

It is the enzyme needed in the synthesis of (Y) to DOPA

Answer 8

Tyrosine hydroxylase

Question 9

What is the expanded name of DOPA?

Answer 9

Dihydroxyphenylalanine

Question 10

This process changes (Y) from being hydrophobic to hydrophilic (a massive negative charge)

Answer 10

Phosphorylation

Question 11

It is a precursor in forming a group of
neurotransmitter e.g. dopamine

Answer 11

Catecholamines

Question 13

Two (2) substances are needed in the conversion of (F) TO (Y)

Answer 13

O2 and co-enzyme

Question 14

This is the pigment which gives hair and skin their color

Answer 14

Melanin

Question 15

(Y) is synthesized from (F), what is (Y)?

Answer 15

Tyrosine

Question 16

It is an inherited disorder that increases the levels of (F) in the blood

Answer 16

PKU

Question 17

It is the enzyme responsible for the first step in processing phenylalanine

Answer 17

PAH

Question 18

This amino acid is used for depression, ADHD, Parkinson’s disease, chronic pain, osteoarthritis, rheumatoid arthritis, alcohol withdrawal symptoms, and skin disease like vitiligo.

Answer 18

Phenylalanine

Question 19

This molecule is very important in metabolism, wherein in the liver it can be made into glucose for transport to the muscle and the reverse process occurs in the muscles

Answer 19

Pyruvic acid

Question 20

This molecule is part of the citric acid cycle, and this is where aspartic acid may enter the citric acid cycle that is used for generating energy

Answer 20

Oxaloacetic acid

Question 21

This molecule is formed when ammonia is removed from alpha – carbon and replaced with a ketone group

Answer 21

Alpha-ketoglutaric acid

Question 22

It is a ketone formation from amino acids

Answer 22

Deamination

Question 23

Asparagine can be converted into Aspartate by this process

Answer 23

Hydrolyzing the amide bond

Question 24

Where are the three (3) amino acids considered as aromatic?

Answer 24

Phenylalanine, Tryptophan, Tyrosine

Question 25

The twenty (20) amino acid is divided into how many groups?

Answer 25

3

Question 26

Valine = Val : E = ?

Answer 26

Glutamate

Question 27

Glutamine = Gln : D = ?

Answer 27

Aspartate

Question 28

Threonine = Thr : Y = ?

Answer 28

Tyrosine

Question 29

It is the simplest among the non-polar aliphatic R - group of amino acids

Answer 29

Glycine

Question 30

What are the two functional groups present in amino acid?

Answer 30

Amine and carboxylic acid

Question 31

How many possible isomers can an amino acid form?

Answer 31

4

Question 32

What is the charge of the amine group in amino acid at physiological pH value?

Answer 32

Gain an extra proton and has a positive charge

Question 33

What is the physiological pH value?

Answer 33

pH 7.4

Question 34

This structure of amino acid predominates at physiological pH

Answer 34

Zwitterion

Question 35

The amino acids commonly dealt with in biochemistry

Answer 35

Beta amino acids

Question 36

Alanine = Ala : R = ?

Answer 36

Arginine

Question 37

Serine = Ser : P = ?

Answer 37

Proline

Question 38

Isoleucine = Ile : W = ?

Answer 38

Tryptophan

Question 39

These are made from strings of amino acids linked together by amide bond between the alpha carboxyl and the alpha amino groups

Answer 39

Proteins

Question 40

Where do the process in making urea occur in the human system?

Answer 40

Liver

Question 41

What do you call an amino acid that has a secondary primary amino group at the end position of its aliphatic chain?

Answer 41

Lysine

Question 42

What do you call an enzyme that is used in proteins to transfer methyl groups?

Answer 42

Methyl transferases

Question 43

Which among the choices below is used to treat asthma

Answer 43

Cysteine

Question 44

When sugar is attached to an amino acid, what do you call the bond formed?

Answer 44

O-glycosidic linkage

Question 45

When sugar is attached to proteins, it can attached to Serine or Threonine by what type of functional group?

Answer 45

Alcohol

Question 46

What is an amino acid that is an alanine derivative with a hydroxyl group attached to it?

Answer 46

Serine

Question 47

What is called a group of cells found in high numbers just under epithelial surfaces that is a passage for histamine release?

Answer 47

Mast cells

Question 48

What is the only amino acid in proteins whose charge on the R - group is changed around physiological pH?

Answer 48

H

Question 49

What is the product in the decarboxylation of H?

Answer 49

Histamine

Question 50

What is the process in the formation of histamine?

Answer 50

Decarboxylation

Question 51

What is the chemical name of LSD?

Answer 51

Lysergic acid diethylamide

Question 52

What is the implication in the decrease of serotonin level in the human system?

Answer 52

Depressive state

Question 53

What chemical group from the alpha carbon is removed when an amino acid undergo decarboxylation?

Answer 53

CO2

Question 54

What is the chemical name of serotonin?

Answer 54

5-hydroxytryptamine

Question 55

What is the first stage in the synthesis of serotonin?

Answer 55

Hydroxylation

Question 56

What is the name of the amino acid that is considered a very interesting amino acid because of the R - group circles around forming a bond with the amine group of the alpha carbon?

Answer 56

Proline

Question 57

What is the name of the amino acid that can be remembered easily because its R - group is an inverted V in chemical structure?

Answer 57

Valine

Question 58

Which among the choices below is an amino acid wherein the R - group is non-polar and hydrophobic that tends to cluster together with proteins, stabilizing protein structure by means of hydrophobic interactions?

Answer 58

Valine

Question 59

What is the name of this amino acid that contains a guanidinium group and its structure appears in the nucleoside base guanine found in DNA?

Answer 59

R

Question 60

What is formed when two (2) cysteine molecules are oxidized?

Answer 60

Disulfide bridge