Unit 4 Review - Homeostasis

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Uploaded by on Jan 12, 2012

Paul Andersen reviews the major concepts within the fourth unit of the new AP Biology framework. He begins by differentiating between negative and positive feedback loops. He explains how a stable internal environment is maintained through behavior and physiology. He details thermoregulation, osmoregulation and blood glucose regulation. He also describes how natural selection has shaped behavior.

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  • Hello Mr.Andersen we meet again

  • thanks alot, I wish you were a teacher at my school:)

  • please never ever stop making these videos. i wish you taught at my school.

  • whoa! this is really well done. i've learn so much

  • I know Homeostasis like the back of my hand! Well, 90%...

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