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essay 2 - STANDARDS: Introduction: (describe -/+ feedback...

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STANDARDS: Introduction: (describe -/+ feedback loops) 1 pt 1. Definition as an overview of the process: Control mechanism which is regulated through the effect it brings about. 1 + 1 pts 2. Negative feedback: Endproduct acts as an inhibitor of pathway (stimulatory-inhibitory). Seek terms such as inhibit/turn off. Examples: ACTH -> cortisol -> feedback; Lac operon; thermostat metaphor; CO2 respiration, etc. 1 + 1 pts 3. Positive feedback: change in variable amplifies the pathway (stimulatory-stimulatory). Seek terms such as turn on/stimulate/induce. Examples: Oxytocin/birth; LH surge; trypsinogen/trypsin; neural membrane permeability; mating process; sound amplification metaphor; etc. [one point for definition and one point for example] Note: these points might be embedded in Parts A and B. Total of 3 points maximum for introduction out of 5 points possible. Part A: Menstrual Cycle 1 pt 1. Primary function of the cycle as an overall concept: production of gamete and preparation of the uterus. A borad interpretation
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This note was uploaded on 10/31/2011 for the course BIO 102 taught by Professor Robinson during the Spring '09 term at UPenn.

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essay 2 - STANDARDS: Introduction: (describe -/+ feedback...

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