Download 1. In how many of the following organisms does cellular respiration

1. In how many of the following organisms does cellular respiration take place?
Ðtomato plants Ðpoison arrow frogs
Ðgrass
Ðmice
Ðfinches
a. 1 of these
b. 2 of these
c. 3 of these
d. 4 of these
e. 5 of these
2. Which of the following organelles is likely to provide the most ATP as a seed germinates under
the ground?
a. Golgi
b. chloroplast
c. mitochondria
d. endoplasmic reticulum
e. nucleus
3. Which of the following can be the driving force for the movement of ions across a membrane?
a. high-energy electrons
b. ATP
c. concentration gradients
d. all of the above (a, b, and c)
e. (a) and (b) only
4. Which one or more of the following observations support the theory of coevolution?
a. An orchid flower requiring a single bee species for pollination contains a structure
that looks like a female bee from that species.
b. A moth that drinks nectar from petunia flowers that depends upon the moth for
pollination has a mouthpiece the same length as the nectar tube in a petunia flower.
c. A population of jack rabbits becomes less susceptible over time to a new parasite.
d. All of the above
e. None of the above
5. Which of the following statements is false?
a. Most of the ATP in an aerobic cell is formed via the electron transport chain and
chemiosmosis.
b. In eukaryotes, the chemiosmotic formation of ATP requires that the inner mitochondrial
membrane remain intact.
c. ATP is a carrier molecule that will donate (give) electrons to the electron
transport chain .
d. In eukaryotes, the electron transport chain and the enzymes of the Kreb cycle are
located in the mitochondria, whereas the enzymes of glycolysis are located in the cytosol.
e. The role of oxygen is to act as an acceptor of electrons.
6. In a muscle that has been contracting hard and fast, lactic acid builds up causing muscle pain.
Lactic acid is the product of fermentation in human muscle cells. Which of the following is true?
a. The contracting muscle cells make lactic acid because not enough oxygen is available to
make the necessary ATP from electron transport and chemiosmosis.
b. Fermentation is an aerobic process.
c. Fermentation is a series of chemical reactions taking place in mitochondria.
d. All of the above
e. None of the above
7. If an animal - like a fish - comes in contact with a metabolic poison that specifically inhibited
ATP synthase in the mitochondria - which one of the following would you expect
a. increased synthesis of ATP
b. immediate shutdown of oxgen consumption in mitochondria
c. a lack of proton pumping by the electron transport chain
d. an increase in the proton concentration gradient across the mitochondrial inner membrane
e. an equal concentration of protons on both sides of the mitochondrial inner membrane
8. Cyanide acts as a poison by blocking the passage of electrons from the last electron carrier to
oxygen - essentially plugging the electron transport chain. Which one or more of the following
occur:
a. Protons are pumped across the inner membrane and ATP is synthesized.
b. Protons are not pumped across the inner membrane and no ATP is synthesized
c. The excess oxygen interferes with glycolysis and the Krebs cycle causing them to
shutdown.
d. Glycolysis and the Krebs cycle run out of NAD+ and FAD - causing them to shutdown
e. (b) and (d) would occur
9. You have been asked to test a series of substances on lab mice and record results after two
months of daily injections. One substance is known to cause organelle membranes (such as the
inner membrane of the mitochondria) to become more permeable (leaky) to H+. Based on what
you have learned in class - what would you expect to observe after injections of this particular
substance?
a. mice would be extremely active
b. mice would exhibit a lower body temperature
c. mice would produce excess amounts of ATP
d. mice would produce decreased amounts of ATP
10. The function of the proton gradient in the electron transport chain is to provide energy for a
process that:
a. removes a phosphate from ATP.
b. adds a phosphate to ADP.
c. adds an adenosine to ATP.
d. moves electrons onto ADP.
e. makes ATP synthase.
11. If the rate at which protons were pumped across the inner mitochondrial membrane were to
increase, which one or more of the following would you predict could occur?
a. The cell would increase its production of ATP
b. The cell would increase its use of O2
c. The cell would increase its production of water
d. a and b
e. a, b, and c
12. A flock of sparrows is trapped by a storm preventing the flock from flying south before the
temperature drops to 0oC. Which of the following would you correctly predict?
a. The birds’ metabolic rate would decrease
b. The birds would attempt to increase their surface to volume ratios
c. The rate at which the birds would use oxygen would decrease
d. The at which the birds would pump protons across the inner mitochondrial membrane
would increase
e. The birds would increase their uptake of CO2
13. Which one or more of the following processes would be inhibited would be greatly reduced in
an intact cell if you added an inhibitor that completely blocked an enzyme involved in the Krebs
cycle?
a. NADH formation
b. Carbon dioxide production
c. Oxygen uptake
d. ATP formation
e. All of the above (a-d) would be reduced.