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Cards In This Set
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List seven traits that characterize life:
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1.contain nucleic acids,
proteins, carbohydrates, lipids 2.composed
of cells 3.grow and reproduce 4.use
energy and raw materials 5.respond to their environment 6.maintain homeostasis 7.evolve and have adaptive traits
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Name two characteristics that classify humans as mammals:
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Hair, mammary glands
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Name two characteristics that classify humans as primates:
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Large brain, color vision, single offsrping, fingernails...
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Distinguish between population: Biosphere:
Community: Ecosystem: |
community: all species in an ecosystem that can
interact ecosystem:
a community and its physical environment biosphere:
part of earth that supports life
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What is a hypothesis?
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explanation for observation
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What is a theory?
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well supported and wide ranging explanation of some
aspect of the physical universe
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Define controlled experiment?
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two groups, control group and
experimental group, treated in same way… except for one variable
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Inductive reasoning
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facts accumulated through
observation until evidence allows some logical general statement can be made
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Deductive reasoning:
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begins with general statement
that leads logically to one or more deductions/conclusions
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Describe epidemiological study
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researchers look at patterns
that occur within large populations (ex. Investigate effects of air pollution
on asthma)
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What is an Atom?
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Unit
of matter that cannot be broken down into simpler substances by ordinary
chemical means
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What is an isotope?
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atoms that have same number of protons but differ
in number of neutrons
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How is radiations used to diagnose/ cure illness?
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x-ray, radicoactive iodine, small amounts help
generate images of internal body parts, kills cancer cells (divide more
rapidly, higher rates of metabolism)
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Covalent Bond:
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forms when 2 or more atoms SHARE electrons in their
outer shell ex: methane (CH4)
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Ionic Bond:
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results from the mutual attraction of oppositely
charged ions ex.: Sodium
Chloride NaCl
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