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60 terms

CHEM FINAL

STUDY
PLAY
What is the product of the reaction of an alcohol and a carboxylic acid when reacted together under acidic conditions?
an ester
The splitting apart of an ester in the presence of a strong acid and water is called
hydrolysis
How many hydrogen atoms is the carbonyl group in a ketone bonded to?
none
commercially, liquid vegetable oils are converted to solid fats such as margarine by
hydrogenation
galactose is a product of enzymatic hydrolysis of
lactose
the function of the enzyme-substrate complex is to provide an alternative reaction pathway that
decreases the activation energy for the reaction
a noncompetitive inhibitor has a structure that
does not resemble the substrate structure
what classification of alcohol is resistant to oxidation
tertiary
which of the following is NOT true for a competitive inhibitor
it binds to the enzyme at a site remote from the active site
"Physiologic conditions" for reactions within the body are approximately
ph7 & 37 degrees celcius
which group of carbohydrates cannot be hydrolyzed to give smaller molecules
monosaccharides
what classification of alcohol undergoes oxidation to yield a ketone
secondary alcohol
synthesis of cholesterol takes place in
liver
a monosaccharide that consists of 5 carbon atoms, one of which is in a ketone group, is classified as an
ketopentose
a lipoprotein particle functions to
transport nonpolar lipids to body cells
heavy metals denature proteins by
disrupting disulfide bonds
a cycloalkane
has two fewer hydrogen atoms than the corresponding alkane
many of the frangrances of flowers and the flavors of fruits are due to
esters
hemoglobin is an example of a protein with
a gobular structure
in the l-isomer of a fischer projection of a monosaccharide, the oh- group furthest from the carbonyl is written?
on the left of the bottom chiral carbon
a polyunsaturated fatty acid contains more than one
double bond
the alcolhol in this list that would be most soluble in water is
ethanol
the reaction of an alkene and water in the presence of an acid catalyst to produce alcohol is called
hyrdration
fructose does not undergo hydrolysis because its a
monosaccharide
in the iupace naming system, a ketone is named by replacing the -e in the corresponding alkane name with
one
the names of many enzymes can be recognized with the suffix
-ase
the active site of an enzyme
catalyzes the reaction
the dehydration of an alcohol in the presence of a strong acid yields
an alkene
the peptide bonds that link amino acids in a protein are?
aminde bonds
which of the following is found in vinegar?
acetic acid
compounds that have the same molecular formula but different arrangements of atoms are called
isomer
a non competitive inhibitor
alters the three-dimensional structure of the enzyme
a formula that shows the arrangement of all bonds in a molecule is called an?
expanded structural formula
a functional group is a certain group of atoms that
reacts in a predictable way whenever present
collagen, a protein found in tendons and cartilage, would be classified as a ___ protein
structural
which is not a reducing sugar
sucrose
the reaction of hydrogen(h2) and propene using a platinum catalyst is called
additon
which statement is NOT true
all lipids contain fatty acids
compared to saturated fatty acids, unsaturated fatty acids have
shorter carbon chains
a fatty acid salt can act as a soap to remove grease because
the nonpolar tails of the salt dissolve in the greate and the polar salt ends dissolve in water
which of the following is NOT a lipoprotein that carries nonpolar lipids through the blood stream
glycerol
what is the nuclear symbol for a radioactive isotope of copper with a mass number of 60?
60/29 Cu
the product of from the alpha decay of 235/92 U is
231/90 Th
which of the following types of radiation has the highest energy?
y-rays
the damaging effects of radiation on the body are a result of
the formation of unstable ions or radicals
the process in which a nucleus spontaneously breaks down by emitting radiation is know as
radioactive decay
why is it important that radioisotopes used in diagnostic tests have short half-lives
this minimizes the harmful side effects of the radiation
the half-life of a radioisotope is
the time is takes for one-half of the sample to decay
iodine-123, which is used for diagnostic imaging in the thyroid, has half-life of 13 hours. If 50.0mg of I-123 were prepared at 8am on monday how many mg remain at 10am on the following day
12.5mg
when an atom of uranium-235 is bombarded with neutrons, it splits into smaller nuclei and produces a great amount of engery. this nuclear process is called
fission
radium-226 decays by alpha emission to
radon-222
ribulose has the following structural formula, to what carbohydrate class does ribulose belong
ketopentose
a glycosidic bond between two monosacchardies can also be classified as an
ether bond
amylose is a form of starch which has
only a-1,4- links bond glucose units
aspartame and saccharin are two examples of
non carbohydrate sweeteners
under acid hydrolysis condition, starch is converted to
glucose
hypoglycemia is a condition in which
the glucose level in the blood is lower than normal
photosynthesis uses ___ as an energy source
sunlight
humans cannot digest celluslose because they
lack the necessary enzymes to digest b-glycosides
the iupace name for CH3-CH2-C=C-CH3 IS
2-pentyne