Concept explainers
The immediate energy source that drives ATP synthesis by ATP synthesis during oxidative phosphorylation is the
- A. oxidation of glucose and other organic compounds.
- B. flow of electrons down the electron transport chain.
- C. H+ concentration gradient across the membrane holding ATP synthase.
- D. transfer of phosphate to ADP.
Introduction:
ATP is the energy currency of our body. It is synthesized in the mitochondria by oxidation of glucose (mostly). The process is called oxidative phosphorylation.
Answer to Problem 1TYU
Correct answer:
TCA cycle helps in the production of an electron motive force that is passed along the complexes in the inner mitochondrial membrane (electron transfer chain) and converted to proton motive force. This positive force is then responsible for ATP synthesis. Therefore, option (C) is correct.
Explanation of Solution
Reason for the correct statement:
When the concentration of protons is high outside the membrane of mitochondria, protons are forced through the enzyme ATP synthase. This proton movement makes the ATP synthase to rotate and the production of APT from ADP and inorganic phosphate (Pi).
Option (C) is given as “
“The immediate energy source that drives ATP synthesis by ATP synthase during oxidative phosphorylation is the
Hence, the option (c) is correct.
Reasons for the incorrect statements:
Option (A) is given as “oxidation of glucose and other organic compounds”.
Oxidation of glucose and other organic material actually occurs where the process of ATP synthesis starts; however, it is not the immediate energy source for ATP synthesis. Thus, it is the wrong answer.
Option (B) is given as “flow of electrons down the electron transport chain”.
ETC is responsible for creating the gradient, but it is not the immediate energy source for ATP synthesis. Thus, it is the wrong answer.
Option (D) is given as “transfer of phosphate to ADP”.
The immediate energy source that drives ATP synthesis by ATP synthase during oxidative phosphorylation is the
Hence, options (A), (B), and (D) are incorrect.
Proton gradient created in the inter-membrane space is the reason for ATP generation by enzyme ATP synthase.
Want to see more full solutions like this?
Chapter 7 Solutions
CAMPBELL BIOLOGY IN FOCUS-TEXT,AP ED.
Additional Science Textbook Solutions
Physical Science
Genetics: From Genes to Genomes
Campbell Essential Biology (7th Edition)
Microbiology Fundamentals: A Clinical Approach
Human Physiology: An Integrated Approach (8th Edition)
- Selection of Traits What adaptations do scavengers have for locating and feeding on prey? What adaptations do predators have for capturing and consuming prey?arrow_forwardCompetition Between Species What natural processes limit populations from growing too large? What are some resources organisms can compete over in their natural habitat?arrow_forwardSpecies Interactions Explain how predators, prey and scavengers interact. Explain whether predators and scavengers are necessary or beneficial for an ecosystem.arrow_forward
- magine that you are conducting research on fruit type and seed dispersal. You submitted a paper to a peer-reviewed journal that addresses the factors that impact fruit type and seed dispersal mechanisms in plants of Central America. The editor of the journal communicates that your paper may be published if you make ‘minor revisions’ to the document. Describe two characteristics that you would expect in seeds that are dispersed by the wind. Contrast this with what you would expect for seeds that are gathered, buried or eaten by animals, and explain why they are different. (Editor’s note: Providing this information in your discussion will help readers to consider the significance of the research).arrow_forwardWhat is the difference between Uniporters, Symporters and Antiporters? Which of these are examples of active transport?arrow_forwardWhat are coupled transporters?arrow_forward
- How do histamine and prostaglandins help in the mobilization of leukocytes to an injury site? What are chemotactic factors? How do they affect inflammation process?arrow_forwardCompare and contrast neutrophils and macrophages. Describe two ways they are different and two ways they are similar.arrow_forwardDescribe the effects of three cytokines (not involved in the initial inflammation response). What cells release them?arrow_forward
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education