Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Chapter 7, Problem 6A
Summary Introduction
Introduction:
Mitochondrion is known as the powerhouse of the cell as it is responsible for the production of ATP molecules. It is the site for the
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The function of cristae in a mitochondrion is
A. electron transport and ATP synthesis
B. carbon assimilation
C. intake of o2
D. elimination of Co2
Which of the following statements is TRUE of the electron transport chain (ETC)?
A. The movement of electrons down the ETC drives the formation of a proton (H+) gradient.
B. The movement of H+ ions through ATP synthase drives the transfer of electrons down the ETC.
C. The movement of electrons down the ETC drives the movement of ADP and phosphate through ATP synthase.
D. The movement of H+ ions across the inner membrane of the mitochondria drives the transfer of electrons down the ETC.
What happens as electrons move down the electron transport chain?
A. their energy is used to pump hydrogen ions across the mitochondrial inner membrane
B. they produce carbon dioxide and water
C. the electrons are combined with ADP and phosphate to form ATP
D. their energy is used to pump sodium ions across the mitochondrial inner membrane
Chapter 7 Solutions
Biology
Ch. 7 - Prob. 1UCh. 7 - Which of the following processes is (are) required...Ch. 7 - Which of the following is NOT a product of...Ch. 7 - Glycolysis produces ATP by a. phosphorylating...Ch. 7 - What is the role of NAD+ in the process of...Ch. 7 - The reactions of the Krebs cycle occur in the a....Ch. 7 - The electrons carried by NADH and FADH2 can be a....Ch. 7 - Prob. 1ACh. 7 - Prob. 2ACh. 7 - Prob. 3A
Ch. 7 - What is the importance of fermentation to cellular...Ch. 7 - Prob. 5ACh. 7 - Prob. 6ACh. 7 - Yeast cells that have mutations in genes that...Ch. 7 - Use the following table to outline the...Ch. 7 - Human babies and hibernating or cold-adapted...Ch. 7 - Recent data indicate a link between colder...
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- Which of the following statements is a lie?Select one:a.Specific enzymes in the electron transport chain are unaffected by feedback inhibition.b.Elevated levels of ADP will increase pathway activity in the electron transport chain.c.The rate of transport of electrons through the electron transport chain is regulated by feedback inhibition.arrow_forwardWhich of the following is NOT true of the electron transport chain? a. It produces NADH, as a result of electrons being transferred from glucose to NAD+ b. End products include CO2, water, and pyruvate c. It allows for the controlled release of energy for ATP synthesis d. It is part of the oxidative phosphorylation processarrow_forwardDuring aerobic respiration, high energy electrons are taken from glucose and transferred to electron carriers. The cell then uses the energy from these electrons to: A) pump hydrogen ions across the inner mitochondrial membrane B) produce oxygen C) produce carbon dioxide D) make glucose E) reduce electron carriersarrow_forward
- what are the two things that the mitochondria need to take in for cellular respiration to occur? A)Suger (glucose) & oxygen B)carbon dioxide, water, & energy C)neither of these is true D)both of these is truearrow_forwardWhat is the role of NAD+ in the process of cellular respiration? a. It functions as an electron carrier. b. It functions as an enzyme. c. It is the final electron acceptor for anaerobic respiration. d. It is a nucleotide source for the synthesis of ATP.arrow_forwardWhat would happen to you, metabolically, if all your mitochondria were destroyed? A. You would have much less ATP available to think, move muscles, etc. B. You would have many fewer electrons available to think, move muscles, etc. C. You would have much less oxygen available to think, move muscles, etc. D. You would have much less glucose available to think, move muscles, etc.arrow_forward
- The electrons carried by NADH and FADH2 can be a. pumped into the intermembrane space. b. transferred to the ATP synthase. c. moved between proteins in the inner membrane of the mitochondrion. d. transported into the matrix of the mitochondrionarrow_forwardWhat is the direct mechanism of ATP synthesis during the electron transport phase of cellular respiration? (what is the potential energy source that drives ATP production?) b) Why is oxygen needed for this phase? c) What is the role of ATP synthasearrow_forwardWhy is oxygen important in aerobic cellular respiration? a. Without oxygen, the Citric acid cycle will be disrupted b. Oxygen is the final electron acceptor during the electron transport chain c. they produce carbon dioxide and water d. It provides electrons during cellular respirationarrow_forward
- What is the effect of increased levels of hydrogen ions in the intermembrane space of the mitochondria? answer choices A.) Decreased levels of oxidative phosphorylation B.) Increased levels of water in intermembrane space C.) Decreased levels of chemiosmosis D.) Increased ATP productionarrow_forwardWhich of the following is true of the ATP Synthase in the mitochondria? a It is an enzyme. b It can catalyze either phosphorylation of ADP or dephosphorylation of ATP. c It is a proton transporter. d All of the abovearrow_forwardWhen NADH and FADH2 are oxidized by the proteins in the electron transport chain, A) protons are pumped into the mitochondrial intermembrane space. B) hydrogen ions are pumped into the mitochondrial matrix. C) protons are pumped into the mitochondrial matrix. D) electrons are pumped into the cytoplasm.arrow_forward
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