Homeostasis and Cell Transport Flashcard

Front

What happens to a cell in a hypotonic solution?

Back

A cell will swell and perhaps burst (lyse).

Front

What is the process called that moves substances against the concentration gradient using energy?

Back

Active transport.

Front

What is diffusion?

Back

The movement of particles from an area of high concentration to an area of low concentration.

Front

What structure controls what can enter and leave a cell?

Back

Cell Membrane.

Front

What is passive transport?

Back

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

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What is facilitated diffusion?

Back

A process that allows substances to cross membranes with the assistance of special proteins.

Front

What is the role of the cell membrane?

Back

To regulate the entry and exit of substances in and out of the cell.

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 is an example of active transport?

Back

The sodium-potassium pump, which moves sodium out of the cell and potassium into the cell.