1. Which of the following statements regarding photosynthesis and cellular respiration is TRUe?
Photosynthesis occurs in chloroplasts and cellular respiration occurs in mitochondria
Photosynthesis occurs in mitochondria and cellular respiration occurs in chloroplasts
Photosynthesis occurs in mitochondria and chloroplasts
Cellular respiration occurs in mitochondria and in chloroplasts

2. Correct answer: A

3. 2. Which of the following are products of cellular respiration?
Oxygen and carbon dioxide
Energy to make ATP and carbon dioxide
Oxygen and glucose
Oxygen and energy to make ATP

4. Correct answer: B

5. 3. A kilocalorie is defined as
The quantity of glucose needed to increase the body temperature by 10C
The quantity of heat needed to raise the temperature of 1 kg of water by 10C
The quantity of food used to maintain normal bodily functions
The quantity of food consumed during a given type of exercise

6. Correct answer: B

7. 4. During cellular respiration, NADH
Is chemically converted into ATP
Is reduced to form NAD+
Delivers its electron load to the first electron carrier molecule
Is the final electron acceptor

8. Correct answer: C

9. 5. Which of the following options lists the stages in cellular respiration in the correct order?
Glycolysis, citric acid cycle, and oxidative phosphorylation
Glycolysis, oxidative phosphorylation and citric acid cycle
The citric acid cycle, oxidative phosphorylation, and glycolysis
Oxidative phosphorylation, glycolysis, and the citric acid cycle

10. Correct answer: A

11. 6. Which of the following metabolic pathways is common in aerobic and anaerobic metabolism?
The citric acid cycle
Oxidative phosphorylation
Glycolysis
Electron transport chain

12. Correct answer: C

13. 7. As a result of glycolysis, there is a net gain of _____ ATP.
a. Zero
b. One
c. Two
d. Thirty six

14. Correct answer: C

15. 8. How many molecules of NADH are produced during glycolysis?
Two
Four
Six
Eight

16. Correct answer: A

17. 9. Which of the following is a result of glycolysis?
Production of CO2
Conversion of glucose to two three carbon compounds
A net loss of two ATPs per glucose molecule
Conversion of NADH to NAD

18. Correct answer: B

19. 10. After glycolysis but before the citric acid cycle,
Pyruvate is oxidized
A carbon atom is added to pyruvate to make a four-carbon compound
Coenzyme A is cleaved off pyruvate
Glucose is split producing two molecules of pyruvate

20. Correct answer: A

21. 11. Oxidation is the _________, and reduction is the ___________
Gain of electrons; loss of electrons
Loss of electrons; gain of electrons
Gain of oxygen; loss of oxygen
Gain of protons; loss of protons

22. Correct answer: B

23. 12. The end products of the citric acid cycle include all of the following EXCEPT
CO2
Pyruvate
ATP
FADH2

24. Correct Answer: B

25. 13. During chemiosmosis,
Energy is released as H+ ions move freely across mitochondrial membrane
ATP is synthesized when H+ ions move through a channel in ATP synthase
A concentration gradient is generated when large numbers of H+ ions are passively transported from the matrix of the mitochondrion to the mitochondrion’s intermembrane space
H+ ions serve as the final electron acceptor

26. Correct Answer: B

27. 14. In the electron transport chain, the final electron acceptor is
An oxygen atom
A molecule of carbon dioxide
A molecule of water
ADP

28. Correct answer: A

29. 15. Rotenone is a poison commonly added to insecticides
15. Rotenone is a poison commonly added to insecticides. It binds tightly with one of the electron molecules in the ETC. preventing electrons from passing to the next carrier molecule. Insects exposed to rotenone will die because
They will no longer be able to perform anaerobic respiration.
High levels of fermentation products will build up in their bodies
They will no longer be able to produce adequate amounts of ATP
They will no longer be able to absorb water and will become dehydrated

30. Correct answer: C

31. 16. As electrons move through the mitochondrial space,
NADH is reduced
Water is oxidized
ATP synthase works by active transport
The pH of the intermembrane space decreases

32. Correct answer: D

33. 17. Which of the following processes produces the most ATP per molecule of glucose oxidized?
Aerobic respiration
Alcoholic fermentation
Lactic acid fermentation
All produce approximately the same amount of ATP per molecule of glucose

34. Correct answer: A

35. 18. In fermentation, _______________ is ______________
NADH; reduced
NAD+ ; oxidized
NADH ; oxidized
Ethanol; oxidized

36. Correct answer: C

37. 19. In yeast cells,
Lactic acid is produced during anaerobic respiration
Lactic acid is produced during glycolysis
Alcohol is produced during the citric acid cycle
Alcohol is produced after glycolysis

38. Correct answer: D

39. 20. Bacteria that are unable to survive in the presence of oxygen are called
Obligate anaerobes
Obligate aerobes
Facultative anaerobes
Aerotolerant anaerobes

40. Correct answer: A

41. 21. Which of the following statements regarding glycolysis is FALSE?
Glycolysis is considered to be an ancient metabolic process because it does not require oxygen
Glycolysis is considered to be an ancient metabolic system because it is not located in a membrane bound organelle
Glycolysis is considered to be an ancient metabolic system because it occurs universally
Glycolysis is considered to be an ancient metabolic system because it is the most efficient metabolic pathway for ATP synthesis

42. Correct answer: D

43. 22. When a cell uses fatty acids for aerobic respiration, it first hydrolyzes fats to
Glycerol and amino acids
Glycerol and fatty acids
Fatty acids and sugars
Sugars and glycerol

44. Correct answer: B

45. 23. A friend tells you that he is going on a low-carb diet to lose weight because he thinks that carbs contain more energy than fats or protein. What would you tell your friend about his plan?
This is a good idea because sugars have more electrons than fats and protein
This is a good idea because sugars enter the fuel breakdown pathway earlier than other food molecules
This is an incorrect idea because fats contain more hydrogen atoms than carbohydrates and protein
This is an incorrect idea because all food molecules store the same amount of energy

46. Correct answer: C

47. 24. Studies have shown that the muscles of marathon runners contain an abundance of slow-twitch fibers. Which of the following statements about these fibers is TRUE?
Slow-twitch fibers have lots of mitochondria to make ATP aerobically.
Slow-twitch fibers have lots of mitochondria to make ATP through fermentation
Slow-twitch fibers have few mitochondria and make ATP aerobically.
Slow-twitch fibers have few mitochondria and make ATP through fermentation.

48. Correct answer: A

49. 25. Arsenic is a poison that binds to a molecule needed to build acetyl Co A. Based on this information, which part of cellular respiration would be stopped if arsenic were ingested?
Glycolysis
Citric acid cycle
Electron transport chain
ATP synthase

50. Correct answer: B