An image of the electron transport chain is shown below. Which of the following statements about the electron transport chain is true? Choose the best answer. Protein complex of electron carriers I H+ NADH (carrying electrons from food) Copyright © 2018 Pearson Canada Inc. NAD+ FADH₂ FAD H+ Cyt c IV 2 H+ + 1/2O₂ Electron transport chain H+ H₂O All of the other options are correct. Electrons have higher free energy when present in ubiquinone (shown as Q) than they do when they are present in cytochrome c (shown as Cyt c). The transport of protons from the mitochondrial matrix to the intermembrane space occurs by facilitated diffusion. Complex I and cytochrome c (shown as Cyt c) are peripheral membrane proteins.

Human Anatomy & Physiology (11th Edition)
11th Edition
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Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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An image of the electron transport chain is shown below. Which of the following
statements about the electron transport chain is true? Choose the best answer.
Protein complex
of electron
carriers
H+
NADH
(carrying electrons
from food)
Copyright © 2018 Pearson Canada Inc.
NAD+
H+
III
FADH₂ FAD
Cyt c
IV
2 H+ + 1/2O₂
1 Electron transport chain
H+
H₂O
All of the other options are correct.
Electrons have higher free energy when present in ubiquinone (shown as Q) than
they do when they are present in cytochrome c (shown as Cyt c).
The transport of protons from the mitochondrial matrix to the intermembrane
space occurs by facilitated diffusion.
Complex I and cytochrome c (shown as Cyt c) are peripheral membrane proteins.
Transcribed Image Text:An image of the electron transport chain is shown below. Which of the following statements about the electron transport chain is true? Choose the best answer. Protein complex of electron carriers H+ NADH (carrying electrons from food) Copyright © 2018 Pearson Canada Inc. NAD+ H+ III FADH₂ FAD Cyt c IV 2 H+ + 1/2O₂ 1 Electron transport chain H+ H₂O All of the other options are correct. Electrons have higher free energy when present in ubiquinone (shown as Q) than they do when they are present in cytochrome c (shown as Cyt c). The transport of protons from the mitochondrial matrix to the intermembrane space occurs by facilitated diffusion. Complex I and cytochrome c (shown as Cyt c) are peripheral membrane proteins.
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