Section 1 - Key concepts - Diffusion, osmosis and active transport Flashcards
1
Q
What is diffusion?
A
Net movement of particles from an area of high concentration to an area of low concentration
2
Q
What is osmosis?
A
Net movement of water molecules across a partially permeable membrane from a region of high water concentration to a region of low water concentration
3
Q
What is active transport?
A
Movement of particles across a membrane against a concentration gradient from an area of low to high using energy
4
Q
Formula for finding percentage change?
A
% change = ((final mass - initial mass) ÷ initial mass) x 100
