Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 7, Problem 6TYU
When electrons flow along the electron transport chains of mitochondria, which of the following changes occurs?
- A. The pH of the matrix increases.
- B. ATP synthase pumps protons by active transport.
- C. The electrons gain free energy.
- D. NAD+ is oxidized.
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Students have asked these similar questions
When electrons flow along the electron transport chains of mitochondria, which of the following changes occurs?
Group of answer choices
A. ATP synthase pumps protons by active transport
B. The pH of the matrix increases
C. The electrons gain free energy
D. The cytochromes phosphorylate ADP to form ATP
Which of the following statements concerning ATP synthesis in mitochondria is FALSE?
a. interruption of the flow of electrons from NADH to oxygen would decrease ATP synthesis
b. making the inner mitochondrial membrane permeable to H+ would decrease ATP synthesis
c. the energy liberated by the electron-transport chain is used to pump H+ ions into the IM-space
d. the movement of H+ through a special channel enzyme (synthase) results in ATP synthesis
e. when protons move from the matrix to the IM-space, ATP is made from ADP + Pi
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
Chapter 7 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 7.1 - Compare and contrast aerobic and anaerobic...Ch. 7.1 - Name and describe the two ways in which ATP is...Ch. 7.1 - Prob. 3CCCh. 7.2 - During step 6 in Figure 7.9, which molecule acts...Ch. 7.3 - Name the molecules that conserve most of the...Ch. 7.3 - Prob. 2CCCh. 7.4 - Prob. 1CCCh. 7.4 - Prob. 2CCCh. 7.4 - MAKE CONNECTIONS Membranes must be fluid to...Ch. 7.5 - Prob. 1CC
Ch. 7.5 - WHAT IF? A glucose-fed yeast cell is moved from an...Ch. 7.6 - MAKE CONNECTIONS Compare the structure of a fat...Ch. 7.6 - Prob. 2CCCh. 7.6 - WHAT IF? During intense exercise, can a muscle...Ch. 7 - The immediate energy source that drives ATP...Ch. 7 - Which metabolic pathway is common to both...Ch. 7 - In mitochondria, exergonic redox reactions A. are...Ch. 7 - The final electron acceptor of the electron...Ch. 7 - What is the oxidizing agent in the following...Ch. 7 - When electrons flow along the electron transport...Ch. 7 - Most co, from catabolism is released during A....Ch. 7 - DRAW IT The graph here shows the pH difference...Ch. 7 - INTERPRET THE DATA Phosphofructokinase is an...Ch. 7 - Prob. 10TYUCh. 7 - FOCUS ON EVOLUTION ATP synthases are found in the...Ch. 7 - Prob. 12TYUCh. 7 - Prob. 13TYU
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- Which 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_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_forwardWhich of the following statements is most correct? The electron transport chain - A: generates a pH gradient that reduces O2 to H2O B: generates a proton gradient across the outer mito membrane C: generates a proton gradient across the inner mito membrane D: uses the energy stored in high energy electron carriers to synthesize ATP E: establishes a membrane potential across the outer mito membranearrow_forward
- Which do the electron transport chains of mitochondria and chloroplasts have in common? A. oxygen as an electron donor B. water as an electron acceptor C. use of a hydrogen ion gradient D. one main membrane protein pumparrow_forwardIn aerobic respiration when is carbon dioxide produced? (a) when oxygen is used as the final electron acceptor in oxidative phosphorylation (b) glycolysis (c) during substrate level phosphorylation (d) Krebs cycle (e) when hydrogen is pumped across the inner membrane of the mitochondriaarrow_forwardThe 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_forward
- 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 membranearrow_forwardWhich 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_forwardDuring the aerobic cellular respiration, where do ATP molecules form? a. Cytosol only b. Cytosol and mitochondria only c. Cytosol, mitochondria and ribosomes only d. Mitochondrial matrix and inner mitochondrial membrane onlyarrow_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_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_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_forward
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