The initial reaction in the intrinsic system is conversion of inactive factor XII to active factor XII (XIIa).

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#Id: 3334

#Unit 6. System Physiology – Plant

Given step with the highest amount of free energy is a rate limiting step

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#Id: 3489

#Unit 12. Applied Biology

Totipotency is the ability of a plant cell to develop into a complete plant.

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#Id: 7300

#Unit 6. System Physiology – Plant

Crassulacean acid metabolism (CAM). Temporal separation of CO2 uptake from photosynthetic reactions: CO2 uptake and fixation take place at night, and decarboxylation and refixation of the internally released CO2 occur during the day. The adaptive advantage of CAM is the reduction of water loss by transpiration, achieved by the stomatal opening during the night.

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#Id: 9351

#Unit 4. Cell Communication and Cell Signaling

RII exhibits constitutive kinase activity; means it is active even when not bound to TGF-β.

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#Id: 6994

#Unit 5. Developmental Biology

Cells can progress from totipotent to pluripotent to determined.   d development.