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Bio Chapter 6

Test Study Guide

TermDefinition
atom the building blocks of matter
element pure substance, cannot be broken down by physical or chemical means
proton positively charged particles
electron chemical bond
ionic bond formed when 1+ electrons are transferred from one atom to another
ion atoms that have gained/lost electrons
covalent bond electrons are shared between two atoms
hydrogen bond opposite molecules are attracted to one another
cohesion attraction between same molecules
adhesion attraction between different molecules
surface tension cohesive attraction between surface molecules giving water "skin"
capillary action ability of liquid to flow through narrow spaces
high specific heat water can stabilize temp
evaporative cooling
less dense in solid form ice floats
solvent of life' universal solvent water :)
mixture elements physically mixed
homogeneous mixture even mix
heterogeneous mixture uneven mix
solution homogeneous mixture which one element is dissolved into another
solute being dissolved
solvent doing the dissolving
suspension undissolved materials in water
PH scale 0-14 scale for acidity and basicity
acids compounds that form H+ ions in a solution
bases compounds that form OH- ions in a solution
buffer prevents sudden changes in PH
organic compound contain C bonded to C
four macromolecules carbohydrate, lipid, protein, nucleic acid
monomer of carbohydrate simple sugars (saccarides)
elements in carbohydrate C, H, O
ratio of elements in carbohydrates 1:2:1
examples of carbohydrates sugar, starch, cellulose
monomer of lipid fatter acid and glycerol
elements in lipid C, H, O
ratio of elements in lipids NOT 1:2:1
examples of lipids fats, oils, waxes
monomer of protein amino acids
elements in protein C H O N (sometimes sulfer)
groups in amino acids carbonyl group, amino group, one single hydrogen, "R" group
monomer of nucleic acid nucleotides
elements in nucleic acid C H O N P
examples of nucleic acids DNA, RNA
groups in nucleotides phosphate group, 5-carbon sugar, nitrogenous-base
Created by: katiep22730
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