Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:### Chemiosmotic Theory and ATP Synthesis
**Question 3**: According to the chemiosmotic theory, ATP synthesis results from the flow of what particles? Across what membrane does this flow occur?
**Explanation**:
The chemiosmotic theory, proposed by Peter Mitchell, describes how ATP (adenosine triphosphate) is produced in the mitochondria. According to this theory, ATP synthesis is powered by the flow of protons (H⁺ ions) across a membrane. This process occurs through the mitochondrial inner membrane, where a proton gradient is established, driving the synthesis of ATP via ATP synthase enzymes.
This concept is crucial for understanding cellular respiration and energy production in living organisms. The movement of protons across the membrane generates an electrochemical gradient, which provides the energy necessary for ATP production.
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