24 - 25 Cell Assessment 3: Cell Transport

Front

What is the sodium-potassium pump?

Back

A membrane protein that uses energy to transport sodium out of the cell and potassium into the cell against their concentration gradients.

Front

Why does the sodium-potassium pump require energy?

Back

It's moving molecules against their concentration gradients.

Front

What happens to a cell in a hypertonic solution?

Back

The cell loses water and may undergo plasmolysis.

Front

What is plasmolysis?

Back

The process where cells lose water in a hypertonic solution, causing the cell membrane to pull away from the cell wall.

Front

What is the condition of a cell in an isotonic solution?

Back

The cell is in a state of equilibrium with its environment, maintaining its shape and volume.

Front

What is turgidity in plant cells?

Back

The state of being swollen or firm due to water uptake, making the cell rigid.

Front

What is crenation?

Back

The process where animal cells shrink due to loss of water in a hypertonic solution.

Front

What is a hypotonic solution?

Back

A solution with a lower concentration of solutes compared to the inside of the cell, causing water to enter the cell.

Front

What is simple diffusion?

Back

The movement of molecules across a membrane from an area of higher concentration to an area of lower concentration without energy.

Front

What is facilitated diffusion?

Back

The process of passive transport of molecules across a cell membrane via specific transmembrane proteins.