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Chapter 6 vocab.
Biochemistry
| Term | Definition |
|---|---|
| Element | made of substances |
| atom | smallest particle of an element that has the characteristics of that element. |
| nucleus | center of the atom |
| isotypes | atoms of the same element that have different numbers of neutrons |
| compound | a substance that is composed of atoms of two or more different elements that are chemically combined. |
| covalent bond | when two atoms share electrons the force that holds them together |
| molecule | a group of atoms held together by covalent bond. |
| ion | a charged particle made of atosm |
| ionic bond | the attractive force between two ions of opposite charge |
| metabolism | all of the chemical reactions that occur within an organism |
| mixture | a combination of substances in which the individual componets retain their own properties |
| solution | a mixture in which one or more substances are distributed evenly in another substance |
| acid | any substance that forms hydrogen ions in water |
| base | any substance that forms hydroxide ions in water |
| polar molecule | a molecule with an unequal distribution of charge |
| hyrdrogen bond | attraction of opposite charges between hydrogen and oxygen forms a weak bond |
| diffusion | is the net movement of particles from an area of higher concentration to an area of lower concentration. |
| dynamic equilibrium | a condition in which there is continuous movement but no overall concentraion change |
| isomers | compounds that have the same chemical formula but different three dimensional structures |
| polymer | a large molecule formed when many smaller molecules bond together |
| 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 | a large complex polymer composed of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. |
| amino acids | basic building blocks of proteins |
| peptide bond | the covalent bond formed between the amino acids |
| enzyme | a protein that changes the rate of a chemical reaction |
| nucleic acid | is a complex biomolecule that stones cellular information in the form of a code |
| nucleotides | nucleic acids are polymers made of smaller subunits |
| ph | a measure of how acidic or basic a solution is |