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Human Anatomy & Physiology (11th Edition)
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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**What is happening in #4?** **Diagram Explanation:** The image is an illustration of a cell membrane showing different transport mechanisms across the lipid bilayer. 1. **Section labeled (1):** Represents a section of the cell membrane, composed of a phospholipid bilayer. 2. **Left Transport (2 & 3):** Shows a small blue molecule passing through the membrane, indicating passive transport, likely simple diffusion or osmosis. 3. **Middle Transport (4 & 5):** Illustrates sodium ions (Na⁺) moving through a protein channel. This represents active transport, where ions are moved against their concentration gradient with energy input, marked by #4. 4. **Right Transport (6 & 7):** Shows larger orange molecules being moved through another protein channel, suggesting facilitated diffusion. **Answer Options:** - ○ passive transport - simple diffusion - ○ active transport - ○ passive transport - osmosis - ○ passive transport - facilitated diffusion
Transcribed Image Text:**What is happening in #4?** **Diagram Explanation:** The image is an illustration of a cell membrane showing different transport mechanisms across the lipid bilayer. 1. **Section labeled (1):** Represents a section of the cell membrane, composed of a phospholipid bilayer. 2. **Left Transport (2 & 3):** Shows a small blue molecule passing through the membrane, indicating passive transport, likely simple diffusion or osmosis. 3. **Middle Transport (4 & 5):** Illustrates sodium ions (Na⁺) moving through a protein channel. This represents active transport, where ions are moved against their concentration gradient with energy input, marked by #4. 4. **Right Transport (6 & 7):** Shows larger orange molecules being moved through another protein channel, suggesting facilitated diffusion. **Answer Options:** - ○ passive transport - simple diffusion - ○ active transport - ○ passive transport - osmosis - ○ passive transport - facilitated diffusion
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