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Chapter 6 vocb

biochemisrty vocab.

TermDefinition
acid any substance that forms hydrogen ions(H+) in water
atom smallest partilce of an element that has the characteristics of that element; basic building block of all matter
base any substance that forms hydoxie ions (OH-) in water abd has a pH above 7
compound substance composed of atoms of two or more different elements that are chemically combined
covalent bond chemical bond formed when two atoms share electrons
element substance that cna't be broken down into simpler chemical substances
ion atom or group of atoms that gain or lose electrons; has an electric charge
ionic bond chemical bond formed be the attractive forces between two ions of opposite charge
isotope atoms of the same element that have different numbers of neutrons in the nucleus
metabolism all of the chemical reactions that occur within an organism
mixture combination of substances in which individual components retain their own properties
molecule group of atoms held together by colvalent bonds; has no overall change
nucleus positively charged center of an atom composed of neutrons and positively charged protons, and surrounded by negatively charged electrons
pH measure of how acidic or basic a solution is; the scale ranges from below 0 to above 14;solution with pH above 7 is basic and a pH below 7 is acidic
solution mixture in which one or more substances (solutes) are distributed evenly in another substance (solvent)
diffusion net, random movement of particles from an area of higher concentration to an area of lower concentration, eventually resulting in evne distribution
dynamic equilibrium result of diffusion where there is continuous movement of particles but no overall change in concentration
hydrogen bond weak chemical bond formed by the attraction of positively charged hydrogen atoms to other negatively charged atoms
polar molecule molecule with ann unequal distribution of charg, resul
amino acid basic building blocks of protein molecules
carbohydrate organic compound used by cells to store and release energy; composed of carbon, hydrogen, and oxygen
enzyme type of protein found in all living things that changes the rate of chemical reactions
isomer compounds with the same simple formula but different 3D structures resulting in different physical and chemical properties
lipid large organic compounds made mostly of carbon and hydrogen with small amount of oxygen
nucleic acid complex biomolecues, such as RNA and DNA, that store cellular information in cells in the form of a code
nucleotide subunits of nucleic acid formed froma simple sugar, a phosphate goup, and nitrogenous base
peptide bond covalent bonds formed between amino acids
polymer large molecule formed when smaller molecules bond together
protein large, complex polymer essential to all life composed of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur
Created by: Jasmine Aguilar
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