Chapter 1

Front 1

adaptation

Back 1

evolution of a structure, behavior, or internal process that enablesan organism to respond to environmental factors and live to produceoffspring

Front 2

biology

Back 2

the study of life

Front 3

development

Back 3

all of the changes that take place during the life of an organism

Front 4

energy

Back 4

ability to cause change

Front 5

environment

Back 5

biotic and abiotic surroundings to which an organism mustconstantly adjust

Front 6

evolution

Back 6

gradual change in a species

Front 7

growth

Back 7

the act or process, or a manner of growing; development; gradual increase.

Front 8

homeostasis

Back 8

the tendency of a system, especially the physiological system of higher animals, to maintain internal stability, owing to the coordinated response of its parts to any situation or stimulus that would tend to disturb its normal condition or function.

Front 9

organism

Back 9

a form of life composed of mutually interdependent parts that maintain various vital processes.

Front 10

organization

Back 10

the state or manner of being organized.

Front 11

reproduction

Back 11

the natural process among organisms by which new individuals are generated and the species perpetuated.

Front 12

response

Back 12

any behavior of a living organism that results from an external or internal stimulus.

Front 13

species

Back 13

the major subdivision of a genus or subgenus, regarded as the basic category of biological classification, composed of related individuals that resemble one another, are able to breed among themselves, but are not able to breed with members of another species.

Front 14

stimulus

Back 14

something that incites to action or exertion or quickens action, feeling, thought

Front 15

control

Back 15

to exercise restraint or direction over; dominate; command.

Front 16

data

Back 16

individual facts, statistics, or items of information: These data represent the results of our analyses. Data are entered by terminal for immediate processing by the computer.

Front 17

dependent variable

Back 17

the event studied and expected to change when the independent variable is changed. Compare independent variable

Front 18

experiment

Back 18

a test, trial, or tentative procedure; an act or operation for the purpose of discovering something unknown or of testing a principle, supposition, etc.: a chemical experiment;

Front 19

hypothesis

Back 19

a proposition, or set of propositions, set forth as an explanation for the occurrence of some specified group of phenomena, either asserted merely as a provisional conjecture to guide investigation (working hypothesis) or accepted as highly probable in the light of established facts.

Front 20

independent variable

Back 20

(in an experiment) a variable that is intentionally changed to observe its effect on the dependent variable. dependent variable

Front 21

safety symbol

Back 21

symbol that warns you about a danger that may exist from chemicals,electricity, heat, or experimental procedures

Front 22

scientific methods

Back 22

a method of research in which a problem is identified, relevant data are gathered, a hypothesis is formulated from these data, and the hypothesis is empirically tested.

Front 23

theory

Back 23

coherent group of tested general propositions, commonly regarded as correct, that can be used as principles of explanation and prediction for a class of phenomena: Einstein's theory of relativity. Synonyms: principle, law, doctrine.

Front 24

ethics

Back 24

a system of moral principles: the ethics of a culture.

Front 25

technology

Back 25

the branch of knowledge that deals with the creation and use of technical means and their interrelation with life, society, and the environment, drawing upon such subjects as industrial arts, engineering, applied science, and pure science.