Membrane Transport

Front

What is Passive Transport?

Back

The movement of particles from high to low concentration without the use of energy.

Front

What is Active Transport?

Back

The movement of particles from low to high concentration using energy (ATP).

Front

What is Osmosis?

Back

The diffusion of water molecules across a selectively permeable membrane.

Front

What happens to a cell in a Hypertonic solution?

Back

Water moves out of the cell, causing it to shrink.

Front

What happens to a cell in a Hypotonic solution?

Back

Water moves into the cell, causing it to swell.

Front

What is an Isotonic solution?

Back

A solution where the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.

Front

Why can't you drink salt water?

Back

It will make you dehydrated because the salt concentration is higher than that of your cells.

Front

What is the role of the cell membrane?

Back

To regulate what enters and exits the cell, maintaining homeostasis.

Front

Define concentration gradient.

Back

The difference in concentration of a substance between two areas.

Front

What is facilitated diffusion?

Back

A type of passive transport that uses transport proteins to move molecules across the membrane.