PAP Biology 4-12-18 Warm up on Canvas.

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Presentation transcript:

PAP Biology 4-12-18 Warm up on Canvas

Feedback Loops Positive vs. Negative

Write down what you remember from the GIZMO yesterday. Define homeostasis in your own terms.

While you are watching the video Write down what the Amoeba Sisters define a positive feedback loop and a negative feedback loop to be. Write down any examples they give you as well.

Feedback Loop Definition Channel or pathway formed by an 'effect' returning to its 'cause' and generating either more or less of the same effect.

Positive Feedback In a positive feedback system, the output enhances the original stimulus. It keeps going

Negative Feedback With negative feedback, the output reduces the original effect of the stimulus It stops the action