Biology: The Unity and Diversity of Life (MindTap Course List)
Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 7, Problem 1CT
Summary Introduction

To explain: The reason that the cyanide poisoning starts with the same symptoms as altitude sickness.

Concept introduction:

At a higher altitude, oxygen concentration decreases in the air. It creates shortness of breath due to the low oxygen concentration. Cyanide binds to cytochrome c oxidase that prevents the reduction of the oxygen molecule as it stops the transfer of electrons in the final steps of electron transfer chain.

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The higher the altitude the lower the oxygen level in air. Climbers of very tall mountains risk altitude sickness which is characterized by shortness of breath, weakness, dizziness, and confusion. The early symptoms of cyanide poisoning are the same as those for altitude sickness.    Cyanide binds tightly to cytochrome c oxidase, a protein complex that is the last component of the mitochondrial electron transfer chain. Cytochrome c oxidase with bound cyanide can no longer transfer electrons.  Explain why cyanide poisoning starts with the same symptoms as altitude sickness.
Mutations that prevent Bax and Bak from interacting with the outer mitochondrial membrane would prevent the release of cytochrome c and inhibit intrinsic apoptosis. prevent the release of cytochrome cand promote assembly of the apoptosome. trigger the release of cytochrome c and promote intrinsic apoptosis. trigger the release of cytochrome c and promote the assembly of the apoptosome. trigger the release of cytochrome c and promote the cleavage of procaspase-8.
Which of the following components of the mitochondrial electron transport chain is the only one to be considered a peripheral protein? the cytochrome a-a3 complex the cytochrome c oxidase complex coenzyme Q (ubiquinone) the cytochrome b-c1 complex cytochrome c
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