Passive Transport

Front

What is diffusion?

Back

Diffusion is the process where molecules move from a high concentration to a low concentration.

Front

What happens when the number of water molecules outside of the cell is greater than inside?

Back

Molecules of water will move INTO the cell.

Front

What is the function of a cell membrane?

Back

The cell membrane surrounds and protects the contents of the cell, allows gases to enter, and releases waste products, but does NOT produce energy for the cell processes.

Front

What is Selective Permeability?

Back

Selective Permeability is the ability of the cell membrane to allow some things to pass through while preventing others.

Front

What is equilibrium in the context of cells?

Back

Equilibrium is the state when both inside and outside of a cell have the same amount of water.

Front

What is osmosis?

Back

Osmosis is the movement 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 the difference between active and passive transport?

Back

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

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses transport proteins to help move substances across the cell membrane.

Front

What role do transport proteins play in passive transport?

Back

Transport proteins assist in the movement of substances across the cell membrane without the use of energy.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance across a space.