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UNIT 4 OVERVIEW

BIOLOGY

questions answer
4 elements make up ___% of the human body 96
what are the four elements carbon hydrogen oxygen nitrogen
whats the other 4% calcium phosphorus potassium sulfur sodium
Electrons? are in energy levels outside nucleus.
Lons form when atoms..... grain or lose electron
atoms share pairs of electrons in ____ bonds covalent
water is a polar molecule
nonpolar molecules do not have charged regions
three parts of properties of water high specific heat cohesion adhesion
cohesion? water molecules attracted to each other as a result of hydrogen bond
adhesion? water molecules attracted to other substances
solutions solvent solutes
solvent? dissolves other substances
solutes dissolves in a solvent
what does an acid releases hydrogen ion
carbon based molecules are made of many small subunit bonded together monomers = one polymer = many
carbohydrates made up of carbon hydrogen oxygen
carbohydrates includes sugar and starches
monosaccharides are simple sugars
carbohydrate includes starches,cellulose,glycogen
lipids include fat oil and cholesterol
many lipids contain carbon chain called fatty acid (monomer)
protein are polymers of amino acid
amino acids are linked by peptide bonds
protein functions enzymes oxygen transport (hemoglobin) insulin muscles,skin hair
nucleic acid are polymer and monomers called nucleotides
nucleic made up of a DNA AND RNA
DNA Stores genetic information
RNA builds protein
reactants are changed during a chemical reaction
products are made up by a chemical reaction
activation energy is amount of energy that needs to be adsorbed start a chemical reaction
enzymes are needed for all processes
most enzymes are protein
substrates reactants an enzyme acts on
active site location where substrate bonds to enzyme.
Created by: drickanicole
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