Bio study guide - Vocabulary Chapter 1.1 Science is an...

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Vocabulary Chapter 1.1 Science- is 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- information gathered from observations is called data Inference- logical interpretation based on prior knowledge or experience Hypothesis- proposed scientific explanation for a set of observations Chapter 1.2 Spontaneous Generation- idea that life somehow arises from nonliving matter Controlled Experiment- an experiment where a hypothesis should be tested by an experiment in which only one variable is changed at a time. All other variables should be controlled. Manipulated Variable- the variable that deliberately changes Responding Variable- the variable that is observed and changed in response to the manipulated variable Theory- a hypothesis that is well supported Chapter 1.3 Biology- is the science that employs the scientific method to study living things Cell- basic unit of life Homeostasis- all living organisms expend energy to keep conditions inside their cells within certain limits Sexual Reproduction- reproducing through meiosis Asexual Reproduction- reproducing without meiosis Metabolism- set of chemical reactions that occur in living organisms to maintain life Stimulus- something that reacts with an organism Chapter 1.4 Metric System- a decimal system of measurement whose units are based on certain physical standards which are scaled on multiples of 10 Microscope- devices that produce magnified images of structures that are too small to see with the naked eye
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Compound Light Microscope- microscopes that allow light to pass through the specimen and use two lenses to use two lenses to form an image Cell Culture-a group of cells that develop from a single cell Cell Fractionation- a technique which separates the cell into different parts Chapter 2.1 Atom- basic unit of matter Nucleus- the center of an atom Electron- negatively charge particle Element- pure substance that contains of one type of atom Isotope- atoms of the same element that differ in the number of neutrons Compound- substance formed by the chemical combination of two or more elements in definite proportions Ionic bond- a bond formed when one or more electrons are transferred from one atom to another Ion- positively and negatively charged atoms Covalent bond- bond formed when electrons are shared between atoms Molecule- smallest unit of most compounds Van der Waals forces- slight attraction between oppositely charged regions of nearby molecules when they are close together Chapter 2.2 Cohesion- an attraction between molecules of the same substance Adhesion- an attraction between molecules of different substances Mixture- material composed of two or more substances Solution- mixture where all the components are evenly distributed Solute- substance that is dissolved Solvent- substance that dissolves the solute Suspension- mixtures of water an undissolved materials pH scale- measurement system of the concentration of H + ions in a solution Acid- any compound that forms H + ions in a solution
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This note was uploaded on 09/04/2010 for the course KJH 7988776 taught by Professor Dr.smith during the Spring '10 term at 카이스트, 한국과학기술원.

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Bio study guide - Vocabulary Chapter 1.1 Science is an...

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