quiz 8B Flashcards
CH3(C=O) COOH
to
CH3CH=O & CO2
lyases
CH2OH HC=O
C=O CH OH
HCCOH CH OH
CH2OH CH2OH
isomerase
CH3CH(OH) CH3
to
CH3(CH=O) CH3
Oxidoreductases
phosphoglucomutase
isomerase
lactic dehydrogenase
oxidoreductases
phosphofructokinase
transferases
maltase
hydrolases
citric acid synthetase
ligase
cis 2-pentene
to
trans- 2 pentene
isomerase
NAD/Enzyme
oxidoreductases
CH3CH2 (C=O) OCH3
to propanoic acid and methanol
hydrolases
oxaloacetate and acetyl Co-A to citric acid
ligase
a tripeptide to 3 seperate amino acids
hydrolases
alanine transaminase
transferases
glucose-6-phosphate
to
fructose-6- phosphate
isomerase
acetoacetate decaroxylase
lyases
which of the following protein is replaced the most often
enzymes
replaced the least often
collagen
a large pH change will denature a protein
which type of interaction is most affected
salt bridges
which enzyme is the most specific
a. lipase
b. peptidase
c. sucrase
d. esterase
sucrase
TRUE concerning plasma proteins
they are mainly made in the liver
aldosterone
steroid hormone
glucagon
protein hormone
keratin
neither
can slide right through the cell membrane
steroid hormone
takes minutes to affect the cell
protein hormone
chemical messagers that are produced one place in the body and affect other parts of the body
steroid hormone
protein hormone
attaches to a receptor site on the outside of the target cell
protein hormone
if enzymes turnover rate is very low it is very efficient
false
enzymes and substrates are usually held together by disulfide bonds
false
hormones and enzymes can sometimes be proteins and sometimes non-proteins
false
all enzymes can be affected by substrate saturation
true
doubling the concentration of the substrate will ALWAYS double the rate of reaction
false
all proteins have a quaternary structure
false
all enzymes are globular proteins
true
proteins are most soluble at their isoelectric point
flase
bacteria in milk will cause the milk to become more acidic
true
denaturing with heavy metals affects the salt bridges in the globular protein
true
what fibrous protein has a triple helix structure
collagen
protein is found in muscle fiber
myosin
actin
protein found in artery walls and ligaments
elastin
found in bones and connective tissue
collagen
protein in silk
fibroin
what blood protein is used to transport fatty acids and to maintain osmotic pressure
serum albumins
what is milk “curds” which has precipitated out
casein
most abundant protein in the human body
collagen
protein found in nails, hoofs, hair
keratin
bacteria in milk can convert the lactose into what compound
lactic acid
what vitamin is converted into NAD or NADH
niacin
what vitamin is converted into coenzyme A
pantothenic acid
what vitamin is converted into the FAD
riboflavin
what vitamin is needed for collagen synthesis
vitamin C
what vitamin is converted into TPP
thiamine
scurvy is caused by the deficiency of what vitamin
vitamin C
the rate at which an enzyme will convert substrates to products is called
turnover rate
specific area on the enzyme where the chemical reaction takes place
catalytic site
specific area on the enzyme where the substrate binds
contact site
the inactive protein part (without the cofactors) of an enzyme is called
apoenzyme
what is the cofactors plus the protein part called
holoenzyme
what is the cofactor that is organic but not a protein called
coenzyme
enzyme found in tears and saliva that kills invading bacteria
lysozymes
