Chapter 07 – How Cells Harvest Energy
Do you have all the information needed to determine which stage of cellular respiration
would be most affected by an iron deficiency?
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 07 – How Cells Harvest Energy
Chapter 07 – How Cells Harvest Energy
50. As a forensic pathologist, you have just completed an autopsy of a poisoning victim.
After a thorough examination, you conclude that the victim died of cyanide poisoning. You
know that cyanide binds to the cytochrome oxidase complex, and therefore list the official
cause of death as suffocation due to cyanide exposure. However, if you wanted to provide a
more technical explanation as to the cause of death, which process was specifically inhibited
directly by cyanide?
Chapter 07 – How Cells Harvest Energy
Clarify Question
What is the key concept addressed by the question?
What type of thinking is required?
Gather Content
What do you already know about cellular respiration and cytochrome oxidase? What other
information is related to the question?
Chapter 07 – How Cells Harvest Energy
Choose Answer
Do you have all the information needed to determine which specific process is directly
inhibited by cyanide?
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 07 – How Cells Harvest Energy
51. Phosphofructokinase is regulated by a number of factors, including high levels of ATP.
Why is this enzyme regulated by ATP levels?
52. What important metabolic intermediate does not cross the inner membrane of the
mitochondria?
Chapter 07 – How Cells Harvest Energy
53. In the absence of oxygen, can cells utilize the electron transport chain?
54. Your friend is having difficulty keeping track of the energy flow from glucose through
glycolysis, the Krebs cycle and electron transport. Your best advice would be to
Chapter 07 – How Cells Harvest Energy
55. If ATP synthase had a mutation in the F1 complex portion of the protein, which function
of ATP synthase would most likely be affected?
Chapter 07 – How Cells Harvest Energy
Clarify Question
What is the key concept addressed by the question?
What type of thinking is required?
Gather Content
What do you already know about ATP synthase structure and function? What other
information is related to the question?
Choose Answer
Chapter 07 – How Cells Harvest Energy
Do you have all necessary information to determine which outcome is most likely from a
mutation in the F1 part of ATP synthase?
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 07 – How Cells Harvest Energy
56. What aspect of cellular respiration occurs in the cytoplasm in eukaryotic cells?
57. You decide to go on vacation in the mountains, where you are staying in a cabin.
Unfortunately, when you turn on the water in the cabin you smell hydrogen sulfide (H2S) gas.
After some research, you find out that the H2S may be due to the presence of sulfur bacteria
living in your pipes. What molecule do these bacteria use as an electron acceptor?
Chapter 07 – How Cells Harvest Energy
58. In order to lose weight and reduce body fat, a friend of yours has decided to eliminate all
fat from his diet, while consuming unrestricted amounts of carbohydrates. What do you think
of this idea?
Chapter 07 – How Cells Harvest Energy
Clarify Question
What is the key concept addressed by the question?
What type of thinking is required?
Gather Content
What do you already know about consuming carbohydrates and weight loss? Is excessive
carbohydrate intake a good or bad idea? What other information is related to the question?
Choose Answer
Do you have all the information needed to determine whether or not excessive
consumption of carbohydrates will help or harm your friend?
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 07 – How Cells Harvest Energy
59. Why are the components of the electron transport chain embedded in the inner
mitochondrial membrane rather than floating freely in the cytoplasm of mitochondrial
matrix?