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Biology Level I

Chapter 1

QuestionAnswer
biosphere all the parts of the planet that are inhabited by living things; sum of all Earth's ecosystems
ecosystem community of living things plus the nonliving features of the environment that support them
organism living thing
cell basic unit of living matter; separated from its environment by a plasma membrane
dna deoxyribonucleic acid (DNA): molecule responsible for inheritance; nucleic acid that contains the sugar deoxyribose
gene unit of inherited information in DNA
biology the study of living things
species distinct form of life
domain broadest category used to classify life forms
unicellular consisting of a single cel
prokaryotic cell cell lacking a nucleus and most other organelles
eukaryotic cell cell with a nucleus (surrounded by its own membrane) and other internal organelles
multicellular consisting of many cells
domain broadest category used to classify life forms
What are the three domains? are three domains: Archaea, Bacteria, and Eukarya
Biologists divide each domain into subgroups called __________ kingdoms
Created by: ksylv
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