Active and Passive Transport

Front

What is Active Transport?

Back

The movement of molecules from an area of low concentration to an area of high concentration, requiring energy.

Front

What is Passive Transport?

Back

The movement of molecules across a cell membrane without the use of energy, typically from high to low concentration.

Front

Define Homeostasis.

Back

The state of balance within a cell or organism, where internal conditions remain stable despite external changes.

Front

What does Selectively Permeable mean?

Back

A property of cell membranes that allows some substances to pass through while blocking others.

Front

What is Diffusion?

Back

The process by which molecules spread from areas of high concentration to areas of low concentration.

Front

What is Osmosis?

Back

The diffusion of water molecules through a selectively permeable membrane.

Front

What is Facilitated Diffusion?

Back

A type of passive transport that uses protein channels to help molecules pass through the cell membrane.

Front

What happens to a cell in a Hypotonic solution?

Back

The cell swells as water enters due to lower solute concentration outside the cell.

Front

What happens to a cell in a Hypertonic solution?

Back

The cell shrinks as water leaves due to higher solute concentration outside the cell.

Front

What is the role of protein channels in cell membranes?

Back

They assist in the transport of substances across the membrane, especially in facilitated diffusion.