Definitions

Question 1

define diffusion

Answer 1

it is the net movement of molecules and ions from regions of high concentration to regions of low concentration down a concentration gradient as a result of random movement

Question 2

define osmosis

Answer 2

it is the net movement of water molecules from a region of high water potential to a region of low water potential through a partially permeable membrane

Question 3

define active transport

Answer 3

the movement of molecules and ions in and out of a cell through a partially permeable membrane against a concentration gradient using energy from respiration