NLN PAX RN Study Guide II

compound Microscope - Answer- light microscope that has two converging lens systems: the objective and the eyepiece electron microscope - Answer- a microscope that is similar in purpose to a light microscope but achieves much greater resolving power by using a parallel beam of electrons to illuminate the object instead of a beam of light data - Answer- facts, figures, and other evidence gathered through observations variable - Answer- something in an experiment that can change independent variable - Answer- the experimental factor that is manipulated; the variable whose effect is being studied dependent variable - Answer- the outcome factor; the variable that may change in response to manipulations of the independent variable constant - Answer- variable that is not changed in an experiment controlled experiment - Answer- an experiment in which only one variable is manipulated at a time light microscope - Answer- microscope that uses a beam of light passing through one or more lenses to magnify an object mechanical digestion - Answer- Part of digestion that uses movement and muscles to break down food chemical digestion - Answer- the digestion process in which enzymes are used to break foods into their smaller chemical buiding blocks hydrolysis - Answer- A chemical process that lyses, or splits, molecules by the addition of water; an essential process in digestion. enzymes - Answer- molecules, usually proteins or nucleic acids, that act as catalysts in biochemical reactions anus - Answer- A muscular opening at the end of the rectum through which waste material is eliminated from the body