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ARCsci.voc.test21-39

ARC science vocabulary test # 21-39

wordmeaning
element any substance that cannot be broken down into simpler substances
atom the smallest unit of an element
compound two or more elements that are chemically combined
Molecule the smallest unit of most compunds
organic compound a compound that contains carbon
carbohydrates energy- rich organic compounds such as sugars and starches, that are made of the elements, carbon, hydrogen, and oxygen.
protien large organic molecules made of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfer
amino acid small molecules that are linked together chemically to form protiens
enzyme a type of protien that speeds up a chemical reaction in a living thing
lipid Energy- rich organic compounds, such as fats, oils, and waxes, that are made of carbon, hydrogen, and oxygen
nucleic acid a very large organic molecule made of carbon, oxygen, hydrogen, nitrogen, and phosphorus, that contains instructions that cell need to carry out all the functions of life
RNA ribonucliec acid that plays an important role in the production of protiens
selectivily permeable a property of cell membranes that allows some substances to pass through, while others cannot
osmosis the diffusion of water molecules through a cell membrane without using energy
passive transport the movement of matirels through a cell membrane without using energy
active transport the movement of matierals through a cell membrane using energy
inorganic compound a compound that does not contain carbon
DNA Deoxyriboucliec acid; the genetic material that carries information about an organism and is passed down fromm arent to offspring
diffusion the process by which molecules move from an area of higher concentration to an area of lower concentration
Created by: gpc1313
 

 



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