Chapter 6: Cellular Respiration: Harvesting Chemical Energy
Chapter Quiz
 Pre-Test   Activity Quiz   Chapter Quiz 

1 .       In an experiment, mice were fed glucose (C6H12O6) containing a small amount of radioactive oxygen. The mice were closely monitored, and in a few minutes radioactive oxygen atoms showed up in _____. [Hint]

2 .       The function of cellular respiration is to _____. [Hint]

3 .       An electron carrier acts as an energy-storage molecule when it is __________ (for example, __________). [Hint]

4 .       A molecule is oxidized when it _____. [Hint]

5 .       Which one of the following best describes the electron transport chain? [Hint]

6 .       During respiration in a eukaryotic cell, reactions of glycolysis occur ___________. [Hint]

7 .       During respiration in a eukaryotic cell, reactions of the Krebs cycle occur in ___________. [Hint]

8 .       A chemist has discovered a drug that blocks an enzyme that catalyzes some of the reactions of glycolysis. He wants to use the drug to kill bacteria in people with infections. But he can't do this because _____. [Hint]

9 .       Of the metabolic pathways listed below, the only pathway found in almost all organisms is _____. [Hint]

10 .       What is the name of the process in which glucose is converted to pyruvic acid? [Hint]

11 .       Most of the electrons released from glucose by cell respiration _____. [Hint]

12 .       In preparing pyruvic acid to enter the Krebs cycle, which of the following steps does NOT occur? [Hint]

13 .       When pyruvic acid is converted to acetyl CoA ___________. [Hint]

14 .       Most of the NADH that delivers electrons to the electron transport chain comes from _____. [Hint]

15 .       Why is the Krebs cycle called a cycle? [Hint]

16 .       In the Krebs cycle, the energy production per glucose molecule is _____. [Hint]

17 .       The major (but not sole) energy accomplishment of the Krebs cycle is the ___________. [Hint]

18 .       Immediately after completion of the Krebs cycle, most of the usable energy from the original glucose molecule is in the form of ___________. [Hint]

19 .       Which one of the following serves primarily as a hydrogen-atom-carrier molecule in cells? [Hint]

20 .       The energy given up by electrons as they move through the electron transport chain is used to _____. [Hint]

21 .       The ATP synthase in a human cell gets energy for making ATP directly from _____. [Hint]

22 .       In respiration, which one of the following is NOT done directly by the electron transport chain (or its components)? [Hint]

23 .       Which part of the breakdown of glucose requires molecular oxygen (O2)? [Hint]

24 .       During aerobic respiration, molecular oxygen (O2) is used _____. [Hint]

25 .       If humans did not breathe in O2, we would not _____. [Hint]

26 .       Which one of the following is the source of the energy that pumps hydrogen ions across the inner mitochondrial membrane? [Hint]

27 .       Most of the ATP produced in cellular respiration comes from _____. [Hint]

28 .       During the reaction C6H12O6 + 6 O2 —> 6 CO2 + 6 H2O, ___________. [Hint]

29 .       When a poison such as rotenone blocks the electron transport chain, glycolysis and the Krebs cycle soon grind to a halt as well, because _____. [Hint]

30 .       In cellular respiration, _____ is oxidized and _____ is reduced. [Hint]

31 .       Fermentation is essentially glycolysis plus an extra step in which pyruvic acid is reduced to form lactic acid or alcohol and carbon dioxide. This last step _____. [Hint]

32 .       Sports physiologists at an Olympic training center wanted to monitor athletes to determine at what point their muscles were functioning anaerobically. They could do this by checking for a buildup of _____. [Hint]

33 .       How much ATP can a cell make from one glucose molecule in the presence of carbon monoxide? [Hint]

34 .       In glycolysis in the absence of oxygen, cells need a way to regenerate which compound? [Hint]

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