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)
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Chapter1: The Human Body: An Orientation
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**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.
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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