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The 4 Big Ideas of AP Bio


Terry Meehan

on 17 August 2012

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Transcript of The 4 Big Ideas of AP Bio

4 Big Ideas of Biology I. The process of evolution drives the diversity and unity of life. 2. Biological Systems utilize free energy and molecular building blocks to grow to reproduce and maintain dynamic homeostasis. Regulation &
homeostasis There is a Relationship of structure to function There is Interdependence in nature. Science, technology & society are interrelated as well. Core theme of biology 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 thanks to reproduction. There is Unity:
* What do organisms have in common & why do similarities exist?
*common biochemistry & physiology
*evolutionary relationships
*connected through common ancestor
* The answer seems to lie in... There is Diversity,
but why are there differences?
*natural selection
*adaptations allow different individuals to survive in different environments Organisms need to maintain a “steady state” in the face of changing conditions
i.e. life maintains homeostasis
orgnisms achieve this through feedback
feedback loops monitor the body like a thermostat
metabolic processes turn on when needed, off when not *No organism is an island standing alone.
*at each level there is increasing complexity and interdependencs.
*cells, tissues, organs, *organisms, populations
*communities, ecosystems
*BIOSPHERE Life is an open system.
* it needs input of energy
*energy flows through the system
*energy comes in,energy goes out
* life needs constant input to survive 4. Biological systems interact, and these systems and their interactions possess complex properties. Due to increasing complexity
New properties emerge with each step upward in
the hierarchy of biological order Theodosius Dobzhansky "Nothing in biology makes sense except in the light of evolution." Natural
Selection 3. Living systems store, retrieve, transmit and respond to information essential to life processes. Emergent Properties Darwin's Theory DNA! ENERGY FLOW Feed Back Loops can be positive or negative. Peggy O’Neill Skinner Enduring understanding The new curriculum framework supports Essential Knowledge
with Science Practice Core Concepts AP Biology in 2012-13 Learning Objective 13 New Laboratory Investigations Science Practices:
The student can use representations and models to communicate scientific phenomena and solve scientific problems.
The student can use mathematics appropriately.
The student can engage in scientific questioning to extend thinking or to guide investigations within the context of the AP course.
Student can plan and implement data collection strategies in relation to a particular scientific question.
The student can perform data analysis and evaluation of evidence.
The student can work with scientific explanations and theories.
The student can connect and relate knowledge across various scales, concepts, and representations in and across domains. Testable explanations and predictions: The New AP Biology Exam 4 Big Ideas:
The process of evolution drives the diversity and unity of life.
Biological systems utilize energy and molecular building blocks to grow, reproduce, and maintain homeostasis.
Living systems retrieve, transmit, and respond to information essential to life processes.
Biological systems interact, and these interactions possess complex properties. Cellular Respiration Photosynthesis
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