Cell transport

Front

What is the hydrophobic region of the cell membrane?

Back

The hydrophobic region of the cell membrane consists of the fatty acid tails of phospholipids, which repel water and help maintain the integrity of the membrane.

Front

What is diffusion?

Back

Diffusion is 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

Active transport is the process of moving molecules against their concentration gradient, requiring energy, often in the form of ATP.

Front

What is the plasma membrane?

Back

The plasma membrane is a biological membrane that separates and protects the interior of all cells from the outside environment.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, causing water to enter the cell and potentially leading to swelling.

Front

What is osmosis?

Back

Osmosis is 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

Facilitated diffusion is the process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, causing water to leave the cell and potentially leading to shrinkage.

Front

What role do protein channels play in cell transport?

Back

Protein channels facilitate the movement of specific molecules across the cell membrane, allowing substances that cannot directly diffuse through the lipid bilayer to enter or exit the cell.

Front

What is equilibrium in the context of cell transport?

Back

Equilibrium is the state in which the concentration of a substance is equal throughout a space, resulting in no net movement of molecules.