Cell Transport

Front

What is cell transport?

Back

Cell transport refers to the movement of substances across the cell membrane, which can occur through passive or active mechanisms.

Front

What is passive transport?

Back

Passive transport is the movement of molecules across the cell membrane without the use of energy, typically moving from an area of high concentration to an area of low concentration.

Front

What is active transport?

Back

Active transport is the movement of molecules across the cell membrane using energy, usually moving against the concentration gradient.

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration until equilibrium is reached.

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 are protein channels?

Back

Protein channels are integral membrane proteins that allow specific molecules to pass through the cell membrane, facilitating passive transport.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses protein channels to help move molecules across the cell membrane without energy.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance across a space, which drives the movement of molecules.

Front

What is the role of the cell membrane?

Back

The cell membrane regulates what enters and exits the cell, maintaining homeostasis and protecting the cell's internal environment.

Front

What are lipids?

Back

Lipids are organic compounds that are insoluble in water, including fats, oils, and phospholipids, which are essential for cell membrane structure.