Cell Transport Test Review

Front

What is a hypotonic solution?

Back

A solution where the concentration of solutes is lower outside the cell than inside, causing water to enter the cell, potentially leading to swelling.

Front

What is diffusion?

Back

The movement of molecules from an area of high concentration to an area of low concentration until equilibrium is reached.

Front

What is active transport?

Back

The movement of substances across a cell membrane against their concentration gradient, requiring energy (ATP).

Front

What is passive transport?

Back

The movement of substances across a cell membrane without the use of energy, following the concentration gradient.

Front

What is osmosis?

Back

The diffusion of water molecules across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is facilitated diffusion?

Back

A type of passive transport that uses protein channels to help move molecules across the cell membrane.

Front

What is the main function of phospholipids in the cell membrane?

Back

To form the basic structure of the cell membrane, providing a barrier and allowing for fluidity.

Front

What is a hypertonic solution?

Back

A solution where the concentration of solutes is higher outside the cell than inside, causing water to leave the cell, potentially leading to shrinkage.

Front

What is an isotonic solution?

Back

A solution where the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.

Front

What role do protein channels play in cell transport?

Back

They facilitate the movement of specific molecules across the cell membrane, especially during facilitated diffusion.