Vocabulary Review Introduction to Biology 1

Study of life BIOLOGY 2

High degree of internal & external order in living things ORGANIZATION 3

Composed of only one cell UNICELLULAR 4

Composed of more than one cell MULTICELLULAR 5

Smallest unit of life CELL 6

Group of specialized cells working together TISSUE 7

Tissues working together to do a job such as the heart or lungs ORGANS 8

Tiny structures inside a cell that do different jobs ORGANELLES 9

Chemical compounds that make up organelles BIOLOGICAL MOLECULES 10

An individual living thing ORGANISM 11

A physical or chemical change in the environment an organism can respond to STIMULUS 12

The response of the pupils of the eye when shown a bright light DILATION 13

Stable internal conditions of an organism HOMEOSTASIS 14

What would happen to an organism that didn’t maintain homeostasis DEATH 15

Required by all living things to power their life processes ENERGY 16

Sum of all the chemical reactions in an organism METABOLISM 17

Process of capturing and storing light energy in the bonds of sugars PHOTOSYNTHESIS 18

Increase in size of an organism GROWTH 19

Formation of new cells from existing cells CELL DIVISION 20

The main change that follows cell division in a unicellular organism ENLARGEMENT 21

Process by which an organism becomes a mature adult DEVELOPMENT 22

Cells specializing by taking on different shapes and functions DIFFERENTIATION 23

Organisms producing new organisms like themselves REPRODUCTION 24

Reproduction of organisms must occur for this to be true for a species SURVIVAL 25

Large molecule containing the hereditary information of a cell DNA 26

Instructions for a single trait on DNA GENE 27

Reproduction that recombines hereditary information from two organisms SEXUAL 28

Reproduction where the new individual is genetically identical to the original ASEXUAL 29

The ability of a population of organisms to change over long periods of time EVOLUTION 30

The variety of life that exists DIVERSITY 31

Three major divisions of all life DOMAINS 32

Animalia, Plantae, and Fungi are examples KINGDOMS 33

Organisms interacting with each other and their environment ECOLOGY 34

Communities of living organisms and their physical environment ECOSYSTEM 35

Main byproduct of animals that is used by plants CARBON DIOXIDE 36

Descent with modification EVOLUTION 37

Theory that organisms with favorable traits are better able to survive NATURAL SELECTION 38

Traits that improve an individual’s ability to survive and reproduce ADAPTATIONS 39

An organized approach used by scientists to learn how the natural world works SCIENTIFIC METHOD 40

The act of perceiving the natural world OBSERVATION 41

Formed from observations to propose an explanation for the way things work in the natural world HYPOTHESIS 42

Test of a hypothesis EXPERIMENT 43

Information gathered in an experiment DATA 44

Provides a standard for comparison in an experiment CONTROL 45

The one thing that a scientist allows to change in an experiment VARIABLE 46

Highly tested, generally accepted principle that explains several observations THEORY 47

Scientific experts who critique another scientist’s work PEER REVIEW 48

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