1.Movement- an action by an organism or part of an organism causing a change of position or place
2.Respiration- the chemical reactions in cells that break down nutrient molecules and release energy for metabolism
3.Sensitivity- the ability to detect or sense stimuli in the internal or external environment and to make appropriate responses
4.Growth- a permanent increase in size and dry mass by an increase in cell number or cell size or both
5.Excretion- removal from organisms of the waste products of metabolism (chemical reactions in cells including respiration), toxic materials and substances in excess of requirements
6.Nutrition- taking of materials for energy, growth and development; plants require light, carbon dioxide, water and ions; animals need organic compounds and ions and usually need water
7.Species- a group of organisms that can reproduce and produce fertile offspring
8.Binomial system- an internationally agreed system in which the scientific name of an organism is made up of two parts showing the genus and species
9.Tissue-a group of cells with similar structure, working together to perform a shared function.
10.Organ-a structure made up of a group of tissues, working together to perform specific functions.
11.Organ system- a group of organs with related functions, working together to perform body functions
12.Catalyst- a substance that increase the rate of a chemical reaction and is not changed by the reaction
13.Enzymes- proteins that function as biological catalysts