Honors Biology Mystery Lab: Sugar Cubes and Tea Bags

These flashcards cover key vocabulary and concepts related to diffusion, osmosis, and the experimental observations involving sugar cubes and tea bags.

Diffusion

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

Osmosis

The movement of water molecules through a semi-permeable membrane from an area of low solute concentration to an area of high solute concentration.

Active Transport

The movement of molecules across a membrane that requires energy, usually against the concentration gradient.

Passive Transport

The movement of molecules across a membrane without the use of energy, often along the concentration gradient.

Dynamic Equilibrium

A state in which the concentration of a substance remains constant throughout a system when the rates of diffusion into and out of that system are equal.

Semi-permeable membrane

A barrier that allows certain molecules or ions to pass through while blocking others.

Exocytosis

The process by which a cell expels materials in vesicles, allowing those materials to exit.

Facilitated Diffusion

A process by which substances cross membranes with the assistance of special proteins.