The Movement of NH₄⁺ions into a Cell Down an Electrochemical

question 63

Multiple Choice

The movement of NH₄⁺ions into a cell down an electrochemical gradient created by H⁺pumping is an example of ____.

• A) an ion pump
• B) passive diffusion
• C) facilitated diffusion
• D) secondary active transport
• E) passive transport

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Definitions:

Osmoles

Osmoles measure the amount of solute that contributes to the osmotic pressure of a solution, reflecting the concentration of particles that can move freely across a semipermeable membrane.

Solution

A homogeneous mixture composed of two or more substances, where one substance (the solute) is dissolved in another (the solvent).

Electrolytes

Minerals in the body that have an electric charge, crucial for hydrating the body, regulating nerve and muscle function, balancing blood acidity and pressure.

Ions

Atoms or molecules with a net electric charge due to the loss or gain of one or more electrons.