Consider the following scenario: Molecule X is highly concentrated outside of a cell membrane. Molecule Y is highly concentrated inside of a cell. To transport more molecule Y into the cell, the cell could use (choose all that apply): a symporter that transports both X and Y into the cell an antiporter that uses ATP hydrolysis to pump Y in and X out an uniporter that passively transports Y into the cell
Consider the following scenario: Molecule X is highly concentrated outside of a cell membrane. Molecule Y is highly concentrated inside of a cell. To transport more molecule Y into the cell, the cell could use (choose all that apply): a symporter that transports both X and Y into the cell an antiporter that uses ATP hydrolysis to pump Y in and X out an uniporter that passively transports Y into the cell
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:**Scenario Explanation:**
**Consider the following scenario:**
- Molecule X is highly concentrated outside of a cell membrane.
- Molecule Y is highly concentrated inside of a cell.
**Objective:** To transport more molecule Y into the cell, the cell could use the following mechanisms (choose all that apply):
1. ✔️ A symporter that transports both X and Y into the cell.
2. ⬜ An antiporter that uses ATP hydrolysis to pump Y in and X out.
3. ⬜ A uniporter that passively transports Y into the cell.
**Diagram Explanation:**
- This scenario involves understanding passive and active transport mechanisms.
- **Symporters** use the gradient of one molecule, such as X, to co-transport another molecule, such as Y, into the cell.
- **Antiporters** typically require energy (like ATP) to transport two molecules in opposite directions.
- **Uniporters** facilitate passive transport of a single molecule down its concentration gradient.
This scenario is designed to help students grasp the cellular transport mechanisms available for moving molecules across cell membranes.
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