Flashcard: Cell Membrane & Cell Transport

Front

What is Homeostasis?

Back

A balance that an organism maintains by regulating what goes into and out of the cell.

Front

What is Facilitated Diffusion?

Back

A type of transport that uses transport (channel) proteins to help molecules move from higher to lower concentrations.

Front

What happens to a cell in a hypotonic solution?

Back

The cell will swell and may undergo cytolysis if too much water enters.

Front

What is a Hypertonic solution?

Back

A solution that has more solutes and less water than the cell it contains.

Front

What is the difference between Isotonic, Hypertonic, and Hypotonic solutions?

Back

Isotonic: equal solute concentration; Hypertonic: higher solute concentration; Hypotonic: lower solute concentration.

Front

What is Cytolysis?

Back

The bursting of a cell due to excessive water intake.

Front

What is the role of Protein Pumps in cell transport?

Back

They actively transport molecules against their concentration gradient, requiring energy.

Front

What is Osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What is Endocytosis?

Back

The process by which cells take in substances by engulfing them in a membrane.

Front

What is Exocytosis?

Back

The process by which cells expel materials in vesicles that fuse with the cell membrane.