Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Textbook Question
Chapter 7, Problem 1TYK
What is the final acceptor for electrons in
a. oxygen
b. ATP
c. carbon dioxide
d. hydrogen
e. water
Expert Solution & Answer
Summary Introduction
Introduction:
Cellular respiration consists of a series of reactions that are crucial for metabolism. The reactions that are involved in this type of respiration are catabolic in nature and involve the conversion of energy from organic nutrients.
Answer to Problem 1TYK
Correct answer:
Oxygen
Explanation of Solution
Explanation for the correct answer:
Option (a) is oxygen. Oxygen acts as the final acceptor of electrons in cellular respiration, which has a series of reactions. The electrons from organic molecules are transferred to oxygen. The process also involves several reactions that form ATP (adenosine triphosphate). This cellular respiration produces ATP at the end. Hence, option (a) is correct.
Explanation for the incorrect answer:
Option (b) is ATP. ATP in cellular respiration cannot act as a final acceptor of the electrons. ATP is produced from this reaction and cannot be the ultimate electron receptor. So, it is an incorrect option.
Option (c) is carbon dioxide. Carbon dioxide is the waste product during the process of cellular respiration. Later, it is used for the preparation of organic compounds, carbohydrates. So, it is an incorrect option.
Option (d) is hydrogen. Hydrogen ions are obtained from glucose during cellular respiration; they help in the formation of water when two hydrogen ions and one oxygen ion combine together. They are released at the end of the process. So, it is an incorrect option.
Option (e) is water. Energy is produced with the help of water during cellular respiration, along with carbon dioxide. The hydrogen and oxygen molecules combine to form water. It is a byproduct of the reaction. So, it is an incorrect option
Hence, options (b), (c), (d), and (e) are incorrect.
Conclusion
Therefore, it can be concluded that oxygen is the final acceptor in cellular respiration, since it becomes water in the cycle, by combining with the hydrogen atoms that are released, by the end of the process.
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Chapter 7 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 7.1 - Prob. 1SBCh. 7.1 - Distinguish between cellular respiration and...Ch. 7.2 - Prob. 1SBCh. 7.2 - What is the redox reaction in glycolysis?Ch. 7.2 - How is ATP synthesized in glycolysis?Ch. 7.3 - Summarize the fate of pyruvate molecules produced...Ch. 7.4 - What distinguishes the four complexes of the...Ch. 7.4 - Prob. 2SBCh. 7.5 - Prob. 1SBCh. 7.5 - Prob. 2SB
Ch. 7.6 - Prob. 1SBCh. 7.6 - What are the types of molecules that are the...Ch. 7.6 - Prob. 3SBCh. 7 - What is the final acceptor for electrons in...Ch. 7 - Prob. 2TYKCh. 7 - Prob. 3TYKCh. 7 - Prob. 4TYKCh. 7 - Prob. 5TYKCh. 7 - Prob. 6TYKCh. 7 - Prob. 7TYKCh. 7 - Prob. 8TYKCh. 7 - Which of the following statements is false?...Ch. 7 - In the 1950s, a diet pill that had the effect of...Ch. 7 - Discuss Concepts Why do you think nucleic acids...Ch. 7 - A hospital patient was regularly found to be...Ch. 7 - 13. There are several ways to measure...Ch. 7 - Apply Evolutionary Thinking Which of the two...Ch. 7 - Prob. 1ITDCh. 7 - Prob. 2ITDCh. 7 - As CO2 concentrations increase in the atmosphere,...Ch. 7 - Prob. 4ITD
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