Bisc 160 Exam 2 Corrected || 100% no Error.
Some cellular organelles have obvious internal structural components. In _________ these
components include grana, thylakoids, and stroma.
a. mitochondria
b. chloroplasts
c. vacuoles
d. nuclei
e. lysosomes correct answers b. chloroplasts
Often the end product of a metabolic pathway can inhibit an enzyme that acts to catalyze an
earlier step of the pathway. This blockage is known as
a. noncooperative inhibition.
b. allosteric inhibition.
c. metabolic inhibition.
d. feedback inhibition.
e. reversable inhibition. correct answers d. feedback inhibition
Which of the following statements about NAD+ is false?
a. NAD+ is reduced by the action of dehydrogenases
b. NAD+ can receive electrons for use in oxidative phosphorylation
c. NAD+ is reduced to NADH during both glycolysis and the citric acid cycle.
d. NAD+ has more chemical energy than NADH.
e. In the absence of NAD+ glycolysis can't function. correct answers d. NAD+ has more
chemical energy than NADH.
The light-independent reactions ______ while the light reactions ______.
a. split H2O; make ATP
, b. make ATP; split water
c. make O2; split water
d. fix CO2; make NADPH
e. fix CO2; use ATP correct answers d. fix CO2; make NADPH
Enzymes lower the activation energy that acts as a barrier for a reaction to proceed. Which part
of the graph shown above indicates this effect?
(graph is shown)
A
B
C
D
E correct answers B
Only noncyclic flow of electrons in the chloroplast
a. uses the electron transport chain.
b. produces ATP.
c. produces a proton gradient.
d. uses photosystems.
e. produces NADPH. correct answers e. produces NADPH
Where does the citric acid cycle take place?
a. mitochondrial matrix
b. mitochondrial inner membrane
c. mitochondrial outer membrane
d. cytosol
e. mitochondrial intermembrane space correct answers a. mitochondrial matrix
Some cellular organelles have obvious internal structural components. In _________ these
components include grana, thylakoids, and stroma.
a. mitochondria
b. chloroplasts
c. vacuoles
d. nuclei
e. lysosomes correct answers b. chloroplasts
Often the end product of a metabolic pathway can inhibit an enzyme that acts to catalyze an
earlier step of the pathway. This blockage is known as
a. noncooperative inhibition.
b. allosteric inhibition.
c. metabolic inhibition.
d. feedback inhibition.
e. reversable inhibition. correct answers d. feedback inhibition
Which of the following statements about NAD+ is false?
a. NAD+ is reduced by the action of dehydrogenases
b. NAD+ can receive electrons for use in oxidative phosphorylation
c. NAD+ is reduced to NADH during both glycolysis and the citric acid cycle.
d. NAD+ has more chemical energy than NADH.
e. In the absence of NAD+ glycolysis can't function. correct answers d. NAD+ has more
chemical energy than NADH.
The light-independent reactions ______ while the light reactions ______.
a. split H2O; make ATP
, b. make ATP; split water
c. make O2; split water
d. fix CO2; make NADPH
e. fix CO2; use ATP correct answers d. fix CO2; make NADPH
Enzymes lower the activation energy that acts as a barrier for a reaction to proceed. Which part
of the graph shown above indicates this effect?
(graph is shown)
A
B
C
D
E correct answers B
Only noncyclic flow of electrons in the chloroplast
a. uses the electron transport chain.
b. produces ATP.
c. produces a proton gradient.
d. uses photosystems.
e. produces NADPH. correct answers e. produces NADPH
Where does the citric acid cycle take place?
a. mitochondrial matrix
b. mitochondrial inner membrane
c. mitochondrial outer membrane
d. cytosol
e. mitochondrial intermembrane space correct answers a. mitochondrial matrix
