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 active transport?

Back

Active transport is the process by which molecules move from an area of low concentration to an area of high concentration, requiring energy.

Front

What is passive transport?

Back

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

Front

What is diffusion?

Back

Diffusion is a type of passive transport where molecules move from an area of high concentration to an area of low concentration.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules across a selectively permeable membrane.

Front

What is endocytosis?

Back

Endocytosis is the process by which a cell takes in large molecules by engulfing them with the cell membrane.

Front

What is exocytosis?

Back

Exocytosis is the process by which a cell expels large molecules by fusing vesicles with the cell membrane.

Front

What is the phospholipid bilayer?

Back

The phospholipid bilayer is a double layer of phospholipids that makes up the cell membrane, providing structure and regulating what enters and exits the cell.

Front

What types of molecules can pass through the phospholipid bilayer easily?

Back

Very small non-polar molecules can pass through the phospholipid bilayer without assistance.

Front

What role do proteins play in the cell membrane?

Back

Proteins in the cell membrane assist in transport, act as receptors, and provide structural support.