biology 2nd midterm

diffusion

is the net movement of particles from a region of high concentration to a region of low concentration down a concentration gradient.

osmosis

is the net movement of water molecules from high water potential to low water potential.

active transport

is the net movement of molecules from low concentration to high concentration against a concentration gradient, using (ATP) energy from respiration.

mitosis

produces 2 cells which are exact copies of each other and of the parent.

differentiation

process by which cells become specialised to have specific structures and carry out specific function.

adaptation

adaptation means that the structure of a cell or an organism is best suited to its function / adapted to their environment.