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1. 1.1 adaptation: organism's modification in structure, function, or behavior suit-
able to the environment
2. 1.2 Domain Archaea: one of three domains of life containing prokaryotic cells.
Archaea are single celled organisms that lack a membrane-bound nucleus. The are
found in environments that are often too hostile for other life forms.
3. 1.2 Domain Bacteria: one of three domains of life; prokaryotic cells Bacteria are
single celled organisms that lack a membrane-bound nucleus. Bacteria are found
almost anywhere on the planet.
4. 1.1 behavior: observable, coordinated responses to environmental stimuli
5. 1.3 biodiversity: is the total number of species, the variability of their genes, and
the ecosystems in which they live.
6. 1.4 biology: scientific study of life
7. 1.3 Organization of Biosphere - biosphere: that portion of the surface of the
Earth (air, water, and land) where living organisms are found
8. 1.1 cell: the smallest structure capable of performing all the functions necessary
for life
9. 1.3 Organization of Biosphere - community: populations of different species
that interact with one another within the same environment
10. 1.4 Step 4 conclusion: statement made following an experiment as to whether
the results support or reject the hypothesis
11. 1.4 Step 3 control group: sample that goes through all the steps of an exper-
iment but does not contain the variable being tested; a standard against which the
results of an experiment are checked
12. 1.4 data: facts or pieces of information collected through observation and/or
experimentation
13. 1.4 Step 3 deductive reasoning: process of logic and reasoning, using "if...
then" statements
14. 1.2 domain: Domains are the largest classification category. Biologists assign
organisms to one of 3 domains; the three domains are Archaea, Bacteria, and
Eukarya
15. 1.3 Organization of Biosphere - ecosystem: interactions of communities with
the surrounding physical habitat. Ecosystems are characterized by 1. chemical
cycling 2. energy flow
16. 1.1 energy: capacity to do work and bring about change; occurs in a variety of
forms
17. 1.2 Domain Eukarya: one of the three domains of life, only domain that HAS a
membrane bound nucleus. It consists of organisms in 4 kingdoms Protista, Fungi,
Plantae, and Animalia
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