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GLOSSARY

A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z

Click on the letter of the topic you are interested in, or use the "find on page option" from your browser to locate specfic terms.

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A

  • Asexual Reproduction: production of a new organism in which a single parent produces offspring that are identical to itself (clones).

B

  • Biology: the study of living things.

C

  • Cell: the smallest functional unit of life.
  • Compound Light Microscope: a microscope that allows light to pass through the specimen and use two lenses to form an image; specimens can viewed while living, if very small.
  • Controlled Experiment: a method of testing a hypothesis where one variable is changed at a time, all other variables should be kept the same for all groups.

D

  • Data: the information gathered from observations.

E

  • Electron Microscope: a microscope that uses a beam of electrons to produce images of a specimen; images are much more detailed than those from the light microscope; specimens can not be viewed while living. Two types of electron microscopes are used by scientists: the Transmission Electron Microscope and the Scanning Electron Microscope.

F

 


G

 


H

  • Homeostasis: the ability to maintain a relatively stable internal environment despite changes in the external environment.
  • Hypothesis: a proposed scientific explanation for a set of observations that can be tested.
 

I

  • Inference: a logical interpretation based on prior knowledge or experience.

J

 


K

 


L

 


M

  • Manipulated Variable: the variable in a controlled experiment that is deliberately changed; also called the independent variable.
  • Metabolism: the combination of chemical reactions through which an organism builds up or breaks down materials.
  • Metric System: a decimal system of measurement whose units are based on certain physical standards and are scaled to multiples of 10; also called the International System of Units (SI).
  • Microscope: devices that produce a magnified image of structures that are too small to see with the unaided eye; scientists often use the light microscope and/or the electron microscope.

N

 


O

  • Observation: the process of gathering information about events or processes in a careful, orderly way.

P

 


Q

 


R

  • Reproduction: production of a new organism; can be sexual or asexual.
  • Responding Variable: the variable that is ovserved and that changes in response to the manipulated variable; also called the dependent variable.

S

  • Scanning Electron Microscope (SEM): produces an image of an object by passing electrons in a narrow beam back and forth across the surface of a specimen producing a realistic 3D image of the surface.
  • Science: an organized way of using evidence to learn about the natural world; can also be used to refer to teh body of knowledge that scientists have built up after years of using this process.
  • Sexual Reproduction: production of a new organism in which cells from two different parents unite to form the first cell of the new organism.
  • Spontaneous Generation: the idea that life could arise from nonliving matter.
  • Stimulus: a signal to which an organism responds (example: light, heat/cold, pain).

T

  • Theory: in science, theory applies to a well-tested explanation that unifies a broad range of observations and can be used to make accurate predictions about new situations.
  • Transmission Electron Microscope (TEM): produces an image of an object by bouncing a beam of electrons through a specimen to reveal the internal detail.

U

 


V


W

 


X

 


Y

 


Z

 

 

 


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Phone: (661) 297-3900