Heat exchange                       

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#Id: 6556

#Unit 7. System Physiology – Animal

Glucagon Secretion is increased by hypoglycaemia and decreased by a rise in plasma glucose

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#Id: 6933

#Unit 8. Inheritance Biology

Inversions

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#Id: 8318

#Unit 2. Cellular Organization

Nucleation phase 

Two G-actin molecules bind relatively weakly to each other, but addition of a third actin monomer to form a trimer makes the entire group more stable, acts as a nucleus for polymerization.

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#Id: 9841

#Unit 6. System Physiology – Plant

Three distinct classes of photoreceptors mediate the effects of UV-A/blue light (320–500 nm): the cryptochromes, phototropins and the ZEITLUPE (ZTL) family of proteins

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#Id: 8954

#Unit 11. Evolution and Behavior

As a chromosome with a new gene duplicate spreads through a population, there is polymorphism in the number of copies of the gene that individuals carry. This situation, called copy number variation.