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Chapter 7 & 8: Cellular
Respiration & Photosynthesis
Supplemental Instruction
Iowa State University
Bio 212
Howell & Sakaguchi
December 11, 2013
Study tip: There’s a lot that can be tested over on this final exam. Look at the old exams on blackboard and identify the questions you
missed or don’t understand. Study these topics first.
Cellular Respiration: (look at figures 7.1, 7.4, and 7.7)
What happens?
What goes in/comes out?
Certain drugs act as ionophores that cause the mitochondrial membrane to be highly permeable to H+. How would such drugs affect
oxidative phosphorylation?
With reference to the image below, which of these experiments with sea grass will produce
18O2? (Assume that light is shining on the flasks.)
a. Experiment 1
b. Experiment 2
c. Both experiments
d. Neither experiment
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Photosynthesis ( look at figures 8.3, 8.8)
What happens? (Drawing a picture
1. The first steps in glycolysis use ATP rather than making
a. True
b. False
2. Why is the citric acid cycle a cycle?
a. Because oxaloacetate, which condenses with acetyl CoA, is
continuously regenerated.
b. Because ATP is made, broken down into ADP and iP, and
then made all over again.
c. Because the product of the citric acid cycle is glucose, the
starting material for the process.
d. Because citric acid goes round and round inside the
3. If you were able to introduce a pH indicator into the space
between the outer and inner
mitochondrial membrane, what would expect to see if there
was an increase in electron transport.
a. The pH would likely go up.
b. The pH would likely go down.
c. The pH would likely remain the same.
4.The proton motive force
a. drives the rotation of the ATP synthase.
b. drives electrons down the electron transport chain.
c. drives the hydrolysis of ATP
d. All of the above.
5.In photosynthesis
a. Glucose is broken down to CO2.
b. CO2 is fixed.
c. CO2 is broken down to C and O2
d. All of the above.
What is
What is
6. Light reactions of photosynthesis
a. split H2O
b. generate ATP and NADPH
c. occur in chloroplast thylakoid membranes
d. produce O2.
e. All of the above
7. Electron transport in mitochondria and chloroplasts are
similar in that:
a. electron carriers are located in the internal membranes of
these organelles
b. electron transport involves the translocation of protons
across a membrane and the generation of a proton motive
c. electron carriers consist of protein complexes and smaller
mobile electron carriers.
d. All of the above.