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chapter one biology

conversions, dimensional analysis, controls, variables, microscopes

QuestionAnswer
science an organized way of using evidence to learn about the natural world
observation the process of gathering information about events or processes in a careful, orderly way
data the information gathered from observation
inference a logical interpretation based on prior knowledge or experience
hypothesis a proposed scientific explanation for a set of observations
spontaneous generation the idea that life could arise from nonliving matter
controlled experiment all other variables should be kept unchanged or controlled
manipulated variable/ independent variable the variable that is deliberately changed; difference in expiremental groups
responding variable/ dependent variable the variable that is observedand that changes in response to the manipulated variable; results; what is measured, counted, observed to obtain results
biology the science that seeks to understand the living world
sexual reproduction cells from two different parents unite to produce the first cell of the new organism
asexual reproduction has a single parent
metabolism the combination of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
stimulus a signal which an organism responds
homeostasis often involves internal feedback mechanisms that work in much the same way as a thermostat
evolution evolve or change over time
metric system a decimal system of measurment whose units are based on certain physical standards and are scaled down multiples of 10
microscopes devices that produce magnified images of structures that are too small to see with the naked eye
compound light microsopes allow light to pass through the specimen and use two lenses to form image
electron microscope used to study smaller objects
cell culture group of cells grown in a nutrient solution from a single original cell
cell fractionation technique in which cells are broken into pieces and the different cell parts are seperated
Created by: 100000679710282
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