SET 2: Transport, Solutions & Cell Membranes

Passive transport

Movement of substances without energy

Active transport

Movement of substances using energy

Diffusion

Movement of particles from high to low concentration

Facilitated diffusion

Diffusion using membrane proteins

Osmosis

Diffusion of water across a membrane

Endocytosis

Movement of materials into a cell

Exocytosis

Movement of materials out of a cell

Pinocytosis

Intake of liquids by the cell

Phagocytosis

Intake of solids by the cell

Hypotonic solution

Solution with less solute than the cell

Hypertonic solution

Solution with more solute than the cell

Isotonic solution

Solution with equal solute concentration

Lysis

Cell bursting due to excess water

Flaccid

A limp plant cell

Selectively permeable membrane

Allows some substances to pass but not others

Hydrophilic

Water-loving part of a molecule

Hydrophobic

Water-fearing part of a molecule

Fluid mosaic model

Model describing the flexible cell membrane

Homeostasis

Maintaining a stable internal environment

Equilibrium

Equal concentration throughout