Cellular Homeostasis Vocabulary

Front

The movement of a substance across a membrane that requires the use of energy; movement is against the concentration gradient

Back

Active Transport

Front

Movement across a cell membrane without using energy; movement is with the concentration gradient

Back

Passive Transport

Front

The primary molecule used by cells to store chemical energy for use in cellular processes

Back

Adenosine triphosphate (ATP)

Front

The movement of particles from an area of higher concentration to an area of lower concentration; does not require energy. The particles will continue to move until they are evenly dispersed.

Back

Diffusion

Front

The tendency for a system, such as a cell, to maintain relatively constant internal conditions

Back

Homeostasis

Front

Having a higher concentration of solute outside the cell than inside the cell; water will move out of the cell, causing it to shrink.

Back

Hypertonic

Front

Having a higher concentration of solute inside the cell than outside the cell; water will move into the cell, causing it to swell.

Back

Hypotonic

Front

Equal concentrations of solute both inside and outside the cell; there is no net movement of water into or out of the cell.

Back

Isotonic

Front

The movement of a water from an area of low solute concentration to an area of high solute concentration to equalize the solute concentrations on both sides of the membrane.

Back

Osmosis