Cell Membrane and Cell Transport

Front

What is the function of the cell membrane?

Back

The cell membrane controls the movement of substances in and out of the cell.

Front

What is the structure of the cell membrane?

Back

The cell membrane is composed of a phospholipid bilayer with embedded proteins.

Front

What is passive transport?

Back

Passive transport is the movement of substances across the cell membrane without the use of energy.

Front

What are examples of passive transport?

Back

Diffusion, osmosis, and facilitated diffusion.

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy.

Front

What is osmosis?

Back

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

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of transporting substances across a membrane with the help of carrier proteins.

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.

Front

What is the fluid mosaic model?

Back

The fluid mosaic model describes the cell membrane as a dynamic structure with various proteins floating in or on the fluid lipid bilayer.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells engulf substances from the outside environment.