Principles Of Biology Chapter 1 Vocab

Front 1

homeostasis

Back 1

relatively constant internal conditions that are different than their enviroment

Front 2

atoms

Back 2

fundamental elements of matter

Front 3

molecules

Back 3

cluster of atoms joined together

Front 4

organelles

Back 4

molecules assembled into tiny structures

Front 5

cells

Back 5

membrane-bounded units (contains organelles)

Front 6

tissues

Back 6

groups of similar cells that act as a structural and functional unit

Front 7

organs

Back 7

body structures composed of several different tissues that act as a structural and functional unit

Front 8

organ systems

Back 8

groups of organs

Front 9

population

Back 9

group of organisms of the same species living in the same place

Front 10

species

Back 10

all populations of a particular kind of organism

Front 11

biological community

Back 11

consists of all populations of different species living together in one place

Front 12

ecosystem (ecological system)

Back 12

biological community and the physical habitat within which it lives

Front 13

emergent properties

Back 13

novel properties resulted from way the components interact

Front 14

deductive reasoning

Back 14

applies general principles to predict specific results

Front 15

inductive reasoning

Back 15

uses specific observations to construct general scientific principles

Front 16

hypothesis

Back 16

a suggested explanation that accounts for the observations

Front 17

experiment

Back 17

the test of a hpothesis

Front 18

variable

Back 18

a facgtor that influences an outcome, observation, or process

Front 19

test experiment

Back 19

one variable is altered in a known way to test a particular hypothesis

Front 20

control experiment

Back 20

all variables are unaltered

Front 21

reductionism

Back 21

reduces a complex system into its working parts

Front 22

theory

Back 22

proposed explanation for some natural phenomenom; body of interconnected concepts, supported by scientific reasoning, and experimental evidence, that explains the facts in some area of study

Front 23

evolution

Back 23

genetic change in a population of organisms

Front 24

artificial selection

Back 24

change in the genetic structure of populations due to selective breeding by humans

Front 25

natural selection

Back 25

the differential reproduction of genotypes, caused by factors in the enviroment, leads to evolutionary change

Front 26

homologous

Back 26

have the same evolutionary origin, but differ in structure and function

Front 27

analogous

Back 27

have similar function, but different evolutionary origins

Front 28

dexoyribonucleic acid (DNA)

Back 28

encodes information that specifies what a cell is like

Front 29

gene

Back 29

specific sequence of several hundred to many thousand nucleotides; a discrete unit of information