Test Chapters 8 and 9: Photosynthesis and Cellular Respiration

Multiple Choice

Identify the letter of the choice that best completes the statement or answers the question.

____ 1. Which of the following is the correct sequence of events in cellular respiration?

a.	glycolysis ® fermentation ® Krebs cycle
b.	Krebs cycle ® electron transport ® glycolysis
c.	glycolysis ® Krebs cycle ® electron transport
d.	Krebs cycle ® glycolysis ® electron transport

____ 2. Cellular respiration releases energy by breaking down

a.	food molecules.
b.	ATP.
c.	carbon dioxide.
d.	water.

____ 3. Which of these processes takes place in the cytoplasm of a cell?

a.	glycolysis
b.	electron transport
c.	Krebs cycle
d.	all of the above

____ 4. Which of the following acts as an electron carrier in cellular respiration?

a.	NAD^+
b.	pyruvic acid
c.	ADP
d.	ATP

____ 5. Lactic acid fermentation occurs in

a.	bread dough.
b.	any environment containing oxygen.
c.	muscle cells.
d.	mitochondria.

____ 6. One cause of muscle soreness is

a.	alcoholic fermentation.
b.	glycolysis.
c.	lactic acid fermentation.
d.	the Krebs cycle.

____ 7. In the presence of oxygen, glycolysis is followed by

a.	lactic acid fermentation.
b.	alcoholic fermentation.
c.	photosynthesis.
d.	the Krebs cycle.

____ 8. Cellular respiration is called an aerobic process because it requires

a.	light.
b.	exercise.
c.	oxygen.
d.	glucose.

____ 9. Which organism is NOT likely to carry out cellular respiration?

a.	tree
b.	mushroom
c.	anaerobic bacterium
d.	tiger

____ 10. In eukaryotes, electron transport occurs in the

a.	mitochondria.
b.	chloroplasts.
c.	cell membrane.
d.	cytoplasm.

____ 11. Which of the following passes high-energy electrons into the electron transport chain?

a.	NADH and FADH2
b.	ATP and ADP
c.	citric acid
d.	acetyl – CoA

____ 12. The energy of the electrons passing along the electron transport chain is used to make

a.	lactic acid.
b.	citric acid.
c.	alcohol.
d.	ATP.

____ 13. When the body needs to exercise for longer than 90 seconds, it generates ATP by carrying out

a.	lactic acid fermentation.
b.	alcoholic fermentation.
c.	cellular respiration.
d.	glycolysis.

____ 14. If you want to control your weight, how long should you exercise aerobically each time that you exercise?

a.	at least 90 seconds
b.	less than 15 minutes
c.	15 to 20 minutes
d.	more than 20 minutes

____ 15. The energy needed to win a 2-minute footrace is produced mostly by

a.	lactic acid fermentation.
b.	cellular respiration.
c.	using up stores of ATP.
d.	breaking down fats.

____ 16. All of the following are sources of energy during exercise EXCEPT

a.	stored ATP.
b.	alcoholic fermentation.
c.	lactic acid fermentation.
d.	cellular respiration.

____ 17. Photosynthesis is to chloroplasts as cellular respiration is to

a.	chloroplasts.
b.	cytoplasm.
c.	mitochondria.
d.	nuclei.

____ 18. A student is collecting the gas given off from a plant in bright sunlight at a temperature of 27°C. The gas being collected is probably

a.	oxygen.
b.	carbon dioxide.
c.	ATP.
d.	vaporized water.

____ 19. Photosynthesis uses sunlight to convert water and carbon dioxide into

a.	oxygen.
b.	high-energy sugars.
c.	ATP and oxygen.
d.	oxygen and high-energy sugars.

____ 20. Which region of the visible spectrum is not absorbed well by chlorophyll?

a.	blue
b.	violet
c.	green
d.	red

____ 21. Where in the chloroplast is chlorophyll found?

a.	in the stroma
b.	in the thylakoid
c.	in the ATP
d.	in the glucose

____ 22. Which of the following is NOT a step in the light-dependent reactions?

a.	High-energy electrons move through the electron transport chain.
b.	Pigments in photosystem II absorb light.
c.	ATP synthase allows H^+ ions to pass through the thylakoid membrane.
d.	ATP and NADPH are used to produce high-energy sugars.

____ 23. The Calvin cycle is another name for

a.	light-independent reactions.
b.	light-dependent reactions.
c.	photosynthesis.
d.	all of the above

____ 24. If carbon dioxide is removed from a plant’s environment, what would you expect to happen to the plant’s production of high-energy sugars?

a.	More sugars will be produced.
b.	Fewer sugars will be produced.
c.	The same number of sugars will be produced but without carbon dioxide.
d.	Carbon dioxide does not affect the production of high-energy sugars in plants.

Figure 8-2

____ 25. Which of the graphs in Figure 8-2 represents the effect of temperature on the rate of photosynthesis?

a.	A
b.	B
c.	C
d.	D

Other

USING SCIENCE SKILLS

Figure 9-3

26. Interpreting Graphics What process does Figure 9-3 show?

27. Interpreting Graphics Look at Figure 9-3. Where do the electrons moving along the inner membrane come from?

28. Interpreting Graphics Where do the electrons moving along the inner membrane in Figure 9-3 end up?

29. Inferring Look at the arrows and H⁺ ions in Figure 9-3. Which direction do most of the H⁺ ions move in? What is the result of this movement?

30. Interpreting Graphics ATP synthase is an enzyme. Find ATP synthase in Figure 9-3. What reaction does ATP synthase catalyze when an H⁺ ion passes through its channel?

31. What is ATP? What does it do in cells and how does it provide energy? (10pts)
32. Write the overall equation for the process of photosynthesis and then give a summary of the light dependent reaction and of the Calvin Cycle. (10pts)
33. Write the overall equation for the process of cellular respiration and then give a summary of what happens in glycolysis, Krebs cycle, and electron transport. (10pts)
34. When you were younger you were probably told that in photosynthesis CO₂ gets converted into O₂, but you of course know that is not true. What does the CO₂ get converted into? Where does the O₂ produced in photosynthesis come from? (5pts)
35. As in #34 you might have thought that in cellular respiration O₂ is converted into CO₂, but of course you know that is not true. Where does the CO₂ produced in cellular respiration come from? What does the O₂ become? (5pts)
36. Describe the two types of fermentation. In what organisms do they occur and what end products do they produce? How is each commercially important? (10pts)

Extra Credit:

If you have a fatty acid which is made up of 48 carbons, how many ATPs could be produced from it? Show your work!! (5pts)