1.*~Brain Stretch~*1. What are the three domains that species are grouped in? Archea, Bacteria, and Eukarya2. What is the correct order of thescientific method? (Tests, Hypotheses,Observe, Predictions, and Questions) Observe, Questions, Hypotheses, Predictions, Tests3. What is biology? The scientific study of organisms, including their characteristics, functions, and interactions.

2. Terms to KnowAtom = The smallest unit of a chemical element; made up of electrons, protons, andneutrons (except in a hydrogen atom).Molecule = A chemical substance made up of two or more atoms joined by covalent bondsor ionic attractions.Covalent Bond = A chemical bond based on the sharing of electrons between two atoms.Water = H2O; H+ (hydrogen ion) helps make solutions more acidic while OH- (hydroxylgroup) helps make solutions more basic.Monomer = [Mono means one, mer(os) means unit] A small molecule. Capable ofmaking oligomers or polymers.Oligomer = [Oligo means few, mer(os) means unit] A polymer made up of fewmonomers.Polymer = [Poly means many, mer(os) means unit] A large molecule. 3. HydrolysisHydro = WaterLysis = SeparationA chemical decomposition inwhich a compound (polymer)is split into other compounds(monomers) by reactingwith water.One monomer receives ahydrogen ion (H+) and theother receives a hydroxylgroup (OH-).Releases energy 4. CondensationCon = TogetherDense = CompactAtion = Act or ProcessA type of reaction in whichtwo organic molecules(monomers) covalently bondto form a larger molecule(polymer) as well as a simplemolecule (water).Requires energyA.K.A. Dehydration Reaction