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Bio I Chapter 3 Vocab

Holt

AB
PolarMolecule with negative charge on one side and positive charge on the other
hydrogen bondweak chemical bond between hydrogen atom in one molecule and a negatively charged region of another molecule
cohesionThe attraction of water molecules to each other
adhesionThe attractive force between unlike forces
capillarityAllows water to creep up the interior of a vessel
organic compoundsDerived from living things and contains carbon
condensation reactionReaction (dehydration synthesis) where one molecules of water is produced
hydrolysisThe splitting of a molecule through reaction with water
adenosine triphosphateEnergy source for metabolic processes
carbohydrateOrganic compound organisms use for energy in the cell
monosaccharideSimple sugar – fructose or glucose
isomerOne or more compounds that differ in structure but not in molecular composition
disaccharideDouble sugar – 2 monosaccharides
polysaccharideComplex – 3 or more monosaccharides
proteinsOrganic compound of polypeptides which are formed from amino acids
amino acidsA formation from two amino acids bonded together by means of a condensation reaction
substrateThe reactant in any enzyme-catalyzed reaction
lipidsOrganic molecule that is insoluble in water (fats and steroids)
fatty acidsMonomer that is part of most lipds
hydrophilicWater loving – attracted to water
hydrophobicWater hating – repelled from water
triglycerideLipid made of three fatty-acid molecules and one glycerol molecule
phospholipidsComplex lipid having two fatty acids joined by a molecule of glycerol
steroidLipid in which the molecule is composed of four carbon rings
nucleic acidOrganic molecule, NA or RNA that stores and carries genetic info
ribonucleic acidNucleic acid composed of a single strand – contains ribose instead of uracil
nucleotidePart of DNA or RNA that has nitrogen base, a sugar, and a phosphate group
waxlong fatty-acid chain joined to a long alcohol chain - highly water proof


Teacher
VA

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