honors bio cellular respiration test
when blood gulcose levels decrease (as between meals) what reserves will be used first?
glycogen
what metabolic pathway is common to all cells
glycolysis
a chemist has discovered a drug that blocks the enzyme adlolase. he wants to use the drug to kill bacteria in people with infections. The reason that he cannot do this is because
human cells also undergo glycolysis, so the drug might poison them
glycolysis formation of actcetyl CoA hydrolysis citric acid cycle electron transport all are stages of cell respiration accept for...
hydrolysis
glucose is converted into glycogen primarily in the
liver
substrate level phosphorylation
occurs during glycolysis
what process is transition from glycolysis to the Krebs Cycle?
acetyl CoA formation
which of the following molecules can be used as a substrate for cellular respiration? -glucose -fats -proteins -polysaccarides
all of the above
-electron transport and chemiosmosis-ATP,H2O -cirtric acid cycle -CO2,NADH,FADH2,ATP -formation of acetyl CoA- acetyl CoA, CO2 -glycolysis-pyruvic acid, ATP, NADH which process doesn't match the products
all the processes match the products
in an experiment, mice were fed glucose containing a small amount of radioactive oxygen, The mice were closely monitored, and a few minutes radioactive oxygen atoms showed up in
carbon dioxide
cell respiration is most accurallty described as a _____________process
catabolic
-are generally exergonic -usually produces ATP -are part of metabolism -may produce monosaccharides from polysaccharides all describe what
catabolic reactions
the splitting of molecules into smaller components is refried to as:
catabolism
most of the ATP made during cellular respiration occurs during a process known as
chemiosmiosis
one product of the initial (first) reaction of the herbs cycle is:
citric acid
select the process that are matched with the INCORRECT amount of ATP produced by that process per glucose molecule - glycolysis-- 2ATP(net) -citric acid cycle--4ATP -electron transport chain--32ATP -alcohol fermentation--0ATP -lactate fermentaion--0ATP
citric acid cycle--4ATP
in eukaryotes, glycolysis occurs in the:
cytosol
during the citric acid cycle, each acetyl group entering the cycle yields:
1ATP, 2NADH,and 2CO2
glycolysis yields a net energy profit of ______ ATP molecules per molecule of glucose
2
in glycolysis, glucose receives two phosphate groups from ______, thus forming fructose-1, 6-biphosphate
ATP
fermentation is essentially glycolysis plus an extra step in which pyruvic acid is reduced to form lactic acid or alcohol and carbon dioxide, This last step
extracts no ATP form pyruvic acid
the regenerated molecule in the Kerbs cycle is
oxaloacetic acid
In aerobic respiration, the electrons associated with the hydrogen atoms in glucose are transferred to:
oxygen in a series of steps
how would you rid your muscles of the painful lactic acid build- up after strenuous exercise?
participate in light exercise while breathing deeply
lactic acid production muscle cells is:
permanent, and due to oxygen deficiency
in glycolysis, a six-carbon glucose molecule is converted to two three- carbon molecules of:
pyruvic acid
during aerobic respiration, oxygen is:
reduced
a glucose molecule that is metabolized via aerobic respiration has been completely broken down and released as CO2 by the end of:
the citric acid cycle
the transfer of electrons from glucose to oxygen during aerobic respiration takes place in a stepwise fashion through a number of intermediates rather than by direct transfer. This is because:
the energy of the electrons can be used to make ATP
The role of the oxygen molecules required for aerobic respiration is:
to accept the low energy electrons at the end of the electron transport chain
considering only glycolysis and the conversion of pyretic acid molecules to acetyl CoA molecules, how many NADH molecules will be produced from one glucose molecule?
two
oxidative decarboxylation of two pryruvic acid yields:
two acetyl groups +two CO2
in another experiment mice were allowed to beathe oxygen gas laced radioactive oxygen. In this experiment the radioactive oxygen atoms quickly showed up in
water
aerobic respiration is classified as :
a redox process
name an anaerobic pathway
fermentation
glycolysis -mitochondrion formation of acetyl CoA-cytosol citric acid cycle -mitochondria electron transport -mitochondria which process does NOT match the location in skeletal muscle?
glycolysis -mitochondrion
NADH and FADH2 are products of:
reduction reactions
what step of the Kerb's cycle directly produces a molecule of ATP?
succinate >fumaric acid
when molecules are broken apart in respiration
the energy realsed in respiration is channeled into molecules of ATP
ubiquinol or coenzyme Q
transfers electrons
in the Kerbs acid cycle, two acetyl CoA molecules are metabolized to
4CO2+6NADH+2FADA2+2ATP
in glycolysis, fructose-1, 6-bisphosphate splits, forming two molecules of:
PGAL
-occur as part of the citric acid cycle -produce CO2 that is then exhaled via breathing -involve the removal of a carbon dioxide from a substrate -are one type of general reaction that occurs during aerobic respiration All describe what?
Decarboxylations
