PROTEINS

Question 0

proteins are composed of

Answer 0

linear polymers of amino acids

Question 1

most abundant and functionally diversed molecules in living systems

Answer 1

proteins

Question 2

the set of all proteins expressed by an individual cell at a particular time

Answer 2

proteome

Question 6

amino acids with aliphatic side chains

Answer 6

Glycine
Alanine
Valine
Leucine
Isoleucine

Question 7

Amino acids with hydroxylic groups

Answer 7

Serine
Threonine
Tyrosine

Question 8

amino acids with side chains containing sulfur atoms

Answer 8

Cysteine

Methionine

Question 9

Amino acid with aromatic side chains

Answer 9

Histidine
PhenylaLanine
Tyrosine
Tryptophan

Question 10

an Imino acido

Answer 10

Proline

Question 11

Amino acids with basic group

Answer 11

Arginine
Lysine
Histidine

Question 12

Amino acids with acidic groups and their amides

Answer 12

Aspartic acid
Asparagine
Glutamic acid
Glutamine

Question 13

has the smallest side chain

used in the 1st step of hene synthesis

Answer 13

glycine

Question 14

carries nitrogen from peripheral tissues to the liver

Answer 14

Alanine

Question 15

used in purine synthesis

Answer 15

glycine

Question 16

branched chain amino acids whose metAbolites accumulate in MSUD

Answer 16

valine
leucine
isoleucine

Question 17

major inhibitory neurotransmitter in the spinal cord

Answer 17

Glycine

Question 18

accumulates in phenylketonuria

Answer 18

phenylalanine

Question 19

has the largest side chain

precursor for niacin,serotonin (5-HT) and melatonin

Answer 19

tryptophan

Question 20

transfer of methyl groups as S-adenosylmethionine

precursor of homocysteine

Answer 20

methionine

Question 21

an imino acid that contributes to the fibrous structure of collagen and interrups alpha helices in globular proteins

Answer 21

Proline

Question 22

contains a sulfhydryl group that is an active part of many enzymes

Answer 22

csyteine

Question 23

two cysteines can be connected by a covalent disulfide bond to form

Answer 23

cystine

Question 24

has a carbonyl group and an amide group that can also form hydrogen bonds

Answer 24

asparagine and glutamine

Question 25

site for n linked glycosylation in endoplasmic reticulum

Answer 25

asparagine

Question 26

deaminated by glutaminase resulting in the formation of ammonia
major carrier of nitrogen to the liver from peripheral tissues

Answer 26

glutamine

Question 27

precursor if histamine

Answer 27

histidine

Question 28

used in the diagnosis if folic acid deficiency

Answer 28

N-formiminoglutamate excretion test

Question 29

precursor of creatinine, urea and nitric oxide

Answer 29

arginine

Question 30

non polar amino acids

Answer 30

glycine
alanine
valine
isoleucine
leucine
phenylalanine
tryptophan
methionine
proline

Question 31

polar uncharged amino acids

Answer 31

-OH
serine threonine tyrosine

-SH
cysteine

amide
asparagine
glutamine

Question 32

charged amino acids

Answer 32

acidic

• aspartate
• glutamate

basic

• arginine
• lysine
• histidine

Question 33

all amino acids are chiral except

Answer 33

Glycine

Question 34

chemical compound that has a total net charged of Zero

Answer 34

Zwitterion

Question 35

which group accept protons?

Answer 35

amino group

Question 36

which group donates protons

Answer 36

carboxylic acid group

Question 37

fundamental functional and 3 dimensional structural units if polypeptides

Answer 37

domains

Question 38

specialized group of proteins required for the proper folding of many species of proteins

Answer 38

chaperones

Question 39

precursors for
phenylalanine
tyrosine
L-dopa
dopamine
norepinephrine
epinephrine
thyroxine
melanine

Pure True Love Does Not Exist To Me

Answer 39

tyrosine

Question 40

phosphorylation site of enZyme modification

often linked to carbohydrate groups in glycoproteins

Answer 40

serine

Question 41

sites for O linked glycosylation in golgi apparatus

Answer 41

serine and threonine