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chapter six vocabu.

biochemistry

TermDefinition
elements everything-whether it is a rock,frog,or flower-is made of substances.
atom smallest particle of an element.
nucleus the center of an atom.
isotopes atoms of the same element that have different numbersof neutrons.
compound composed of atoms of two or more different elements that are chemically combined.
covalent bond when two atoms share electrons, such as two hydrogen atoms sharing electrons, the force that holds them together.
molecule group of atoms held together by colvalent bonds.
ionic bond the attractive force between two ions of opposite charge.
metabolism chemical reactions that occur within an organism.
mixture combination of substances which 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.
acid any substance that forms hydrogen ions in water.
base any substance that forms hydroxide ions in water.
polar molecule molecule with an unequal distribution of charge.
hydrogen bond opposite charges between hydrogen and oxygen forms a weak bond.
diffusion net movement of particles from an area of higher concentration to an area of lower concentration.
dynamic equilibrium focus movement but no overall concentration change.
isomers compounds that have the same chemical formula but different three demensional structures.
polymer large molecule formed when many smaller molecules bond together.
carbohydrate biomolecule composed of carbon,hydrogen,and oxygen.
lipids biomolecules that are made mostly of carbon and hydrogen with small amount of oxygen.
protein large, complex polymer comosed of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfer.
amino acids building blocks of protein.
peptide bond covalent bond formed between the amino acids.
enzyme protein that changes the rate of chemical reaction
nucleic acid complex biomolecule that stores cellular information in the form of a code.
nucleotides are polymers made of smaller subnits.
ion charged particle made of atoms
Created by: tylervaughn
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