ap biology 2007-2008 study of life themes ap biology themes science as a process of inquiry ...
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2007-2008 AP Biology
Study of Life
Themes
AP Biology
Themes Science as a process of
inquiry questioning & investigation
Evolution Energy transfer Continuity & Change Relationship of structure to function Regulation Interdependence in nature Science, technology & society
AP Biology
Science as a process of inquiry
AP Biology
Science as a process of inquiry Built on repeatable observations &
testable, falsifiable hypotheses
AP Biology
Evolution Core theme of biology
Charles Darwin
AP Biology
Natural selection Evolutionary change is a
product of the process of natural selection
Organisms don’t adapt;
Organisms have adaptations.
2007-2008 AP Biology
"Nothing in biology makes sense except in the light of evolution."
-- Theodosius DobzhanskyMarch 1973
Geneticist, Columbia University
(1900-1975)
AP Biology
Evolution explains unity & diversity Unity
what do organisms have in common & why do similarities exist? common biochemistry & physiology
evolutionary relationships connected through common ancestor
Diversity but why are there
differences? natural selection adaptations allow different
individuals to survive in different environments
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AP Biology
Organizing systems Making sense out of the diversity Hierarchical
scheme
Eastern gray squirrelSciurus carolinensis
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3 Domains of LifeBacteria, Archaea, Eukarya
EukaryaBacteria Archaea
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Energy transfer Life is an open system
need input of energy energy flows through energy comes in,
energy goes out need a constant input
need input of materials nutrients are recycled
around & around
ENTROPY RULES!DECOMPOSERS
RULE, too!
nutrients
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Energy utilization
You think they’re eating…
They’re harvestingenergy!
AP Biology
Continuity & change Continuity of life is based on heritable
information in the form of DNA DNA – the genetic
material – carries biological information from one generation to the next
You can make more,a lot like you!
TRAIT
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Form follows function The alignment of structure & function is
seen at all levels of biology
organism
cell organelle
organ
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Regulation Organisms need to maintain a “steady state”
in the face of changing conditions maintain homeostasis achieve this through feedback
monitor the body like a thermostat turn on when it’s needed, off when its not
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Interdependence No organism is an island standing alone
communities, ecosystems
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Science, technology & society Science & technology must function within
the rules of society ethics
AP Biology
Themes Science as a process of
inquiry questioning & investigation
Evolution Energy transfer Continuity & Change Relationship of structure to function Regulation Interdependence in nature Science, technology & society
AP Biology
Why study themes of Biology? Biology is an ever expanding body of
knowledge too much to memorize it all need to generalize create a framework upon which to
organize new knowledge themes are the key to understanding
the nature of living organisms
2007-2008 AP Biology
ANY QUESTIONS?