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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Students have asked these similar questions
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9. Aerobic respiration of one lipid molecule. The lipid is composed of one glycerol molecule connected to two
fatty acid tails. One fatty acid is 12 carbons long and the other fatty acid is 18 carbons long in the figure
below. Use the information below to determine how much ATP will be produced from the glycerol part of
the lipid. Then, in part B, determine how much ATP is produced from the 2 fatty acids of the lipid. Finally
put the NADH and ATP yields together from the glycerol and fatty acids (part A and B) to determine your
total number of ATP produced per lipid. Assume no other carbon source is available.
18 carbons
fatty acids
12 carbons
9
glycerol
A. Glycerol is broken down to glyceraldehyde 3-phosphate, a glycolysis intermediate via the following
pathway shown in the figure below. Notice this process costs one ATP but generates one FADH2. Continue
generating ATP with glyceraldehyde-3-phosphate using the standard pathway and aerobic respiration.
glycerol
glycerol-3-
phosphate…
Normal dive (for diving humans)
normal
breathing
dive
normal
breathing
Oz level
CO2 level
urgent need
to breathe
Oz blackout zone
high CO2 triggers breathing
6. This diagram shows rates of oxygen depletion and carbon dioxide accumulation in the blood in
relation to the levels needed to maintain consciousness and trigger the urgent need to breathe in
diving humans.
How might the location and slope of the O₂ line differ for diving marine mammals such as
whales and dolphins?
•
How might the location and slope of the CO₂ line differ for diving marine mammals such as
whales and dolphins?
•
•
Draw in predicted lines for O2 and CO2, based on your reasoning above.
How might the location of the Urgent Need to Breathe line and the O2 Blackout Zone line
differ for diving marine mammals?
What physiological mechanisms account for each of these differences, resulting in the ability
of marine mammals to stay submerged for long periods of time?
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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Anaerobic Respiration; Author: Bozeman Science;https://www.youtube.com/watch?v=cDC29iBxb3w;License: Standard YouTube License, CC-BY