Cell Membrane and Transport

Front

What is the term for cell membrane transport that occurs without energy?

Back

Passive transport.

Front

What is the cellular process called when materials are moved from an area of low concentration to an area of high concentration?

Back

Active transport.

Front

What is a phospholipid composed of?

Back

A phosphate and glycerol head and 2 fatty acid chain tails.

Front

What is the primary function of the plasma membrane?

Back

To regulate what enters and leaves the cell.

Front

What does 'bilayer' mean in the context of cell membranes?

Back

Two layers.

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not.

Front

What role do proteins play in the cell membrane?

Back

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

Front

What is osmosis?

Back

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

Front

What is the significance of the fluid mosaic model?

Back

It describes the structure of the cell membrane as a mosaic of various components that move fluidly.

Front

What is endocytosis?

Back

The process by which cells take in materials by engulfing them in a membrane.