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chapter 6 vocab

bio chemistry

TermDefinition
acid any substance that forms hydrogen ions in water
atom smallest particle of an element that has the characteristics of that element
base any substance that forms hydroxide ions in water
compound substance that is composed of atoms of two or more different elements that are chemically combined
covalent bond force that holds hydrogen atoms sharing a electrons together
element cannot be broken down into simpler substance
nucleus the center of an atom
isotopes atoms of the same element that have different numbers of neutrons
molecule group of atoms geld together by covalent bonds
ionic bond attractive force between two ions of opposite charge
metbolism all of chemical reactions that occur within an organism
mixture combination of substances in which the individual components retain their own properties
solution mixture in which one or more substances are distributed evenly in another substance
pH measure of how acidic or basic a solution is
polar molecule molecule within an unequal distribution of charge
hydrogen bond attraction of opposite charges between hydrogen and oxygen forms a weak bond
diffusion the net movement of particles from an area of higher concentration to an area of lower concentration
dynamic equilibrium continuous movement but no overall concentration change
carbohydrate a biomolecule composed of carbon, hydrogen, and oxygen with a ratio of about two hydrogen atoms and one oxygen atom for every carbon atom
lipids large biomolecules that are made mostly of carbon and hydrogen with a small amount of oxygen
protein large, complex polymer composed pf carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur
amino acids basic building blocks of proteins
peptide bond covalent bond formed between the amino acids
enzyme protein that changes the rate of a chemical reaction
nucleic acid a complex biomolecule that stores cellular info in the form of a code
nucleotides smaller subunits
ion charged particle made of atoms
isomers compounds that have the same chemical formula but different three dimensional structures
Created by: annawestbrook
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