Cell Energy II Flashcards
(20 cards)
Q: what is a chiral center in sugar molecules?
a carbon atom with four different groups attached to it
True or False: one of the functions of carbohydrates is to serve as the building blocks for peptides.
True
Q: which of these carbohydrates are ketoses?
TRUE or FALSE: Ribose and Arabinose are both isomers and aldoses.
True?
True or False: glycolysis takes place in the cytosol
and mitochondria in eukaryotic cells.
True
True or False: the last five
steps of glycolysis occur in
mitochondrial matrix.
True
Q: what steps in glycolysis are irreversible?
step 1, step 3, step 10
Which of the following statements about glycolysis is true?
A. Glycolysis occurs in the mitochondria.
B. Glycolysis requires oxygen to proceed.
C. Glycolysis produces a net gain of 2 ATP per glucose molecule.
D. Glycolysis converts glucose into lactate without producing any energy.
?
True or False: one function of
both alcohol fermentation and lactic acid fermentation is to reduce NAD+ to NADH
false
Q: where is pyruvate converted into acetyl-
CoA in eukaryotic cells?
mitochondrial matrix
True or False: Acetyl-CoA
is produced from fatty
acids through the action of
lipases and β-oxidation.
?
Q: where is succinate
dehydrogenase
located in eukaryotic
cells?
the inner mitochondrial membrane
Q: where are most of the citric acid cycle enzymes located?
located in the mitochondrial matrix
True or False: oxidative
phosphorylation requires a
proton gradient.
true
Which of the following compounds enters the citric acid cycle and combines with
oxaloacetate to form citrate?
A. Acetyl-CoA
B. Pyruvate
C. Alpha-ketoglutarate
D. Malate
A. Acetyl-CoA
True or False: high ATP concentration
in the cell would inhibit the activity of phosphofructokinase
False
Q: what are the main carbohydrates used to
store energy reserves in animal and plant cells?
glycogen and starch
what are the two ways that ATP could be made in animal cells?
-can be directly produced during enzyme catalyzed reactions
-oxidative phosphorylation from electron carriers
which makes stage produces more ATP; pyruvate oxidation or oxidative phosphorylation?
oxidative phosphorylation
