Unit 2 Biology Vocab Flashcard

Front

Strength of a solution; number of molecules in a volume.

Back

concentration

Front

A liquid in which substances are dissolved.

Back

solvent

Front

A substance that dissolves in a solvent to form a solution.

Back

solute

Front

Movement of molecules from high to low concentration.

Back

diffusion

Front

Diffusion of water across a membrane from high to low concentration.

Back

osmosis

Front

Movement of a substance (e.g., glucose) through a cell membrane along a concentration gradient with membrane proteins as carriers.

Back

facilitated diffusion

Front

Movement of molecules/ions from low to high concentration against a gradient, requiring enzymes and energy.

Back

active transport

Front

Concentrations of solutes and water on both sides of the membrane are equal.

Back

isotonic

Front

Higher concentration of substances (less water) compared to others.

Back

hypertonic

Front

Lower concentration of substances (more water) compared to others.

Back

hypotonic