Primary productivity The rate at which solar or chemical energy is captured and converted into chemical bonds by photosynthesis or chemosynthesis.

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#Id: 1971

#Unit 10. Ecological Principles

The number alive during an age class can be estimated by the relationship:

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#Id: 9331

#Unit 4. Cell Communication and Cell Signaling

In the dark, most transducin is localized to the outer segment, while most arrestin is found in other parts of the cell; in this condition, vision is most sensitive to very low light levels.

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#Id: 6559

#Unit 7. System Physiology – Animal

In L cells, preproglucagon is processed primarily to glicentin, & glucagon-like polypeptides 1 and 2. Some oxyntomodulin is also formed

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#Id: 2089

#Unit 8. Inheritance Biology

C bands detects centromeric heterochromatin in chromosome.

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#Id: 1481

#Unit 4. Cell Communication and Cell Signaling

Let-7 miRNAs down-regulate the translation of Ras. Thus in the absence of the miRNAs, Ras is constitutively overproduced, contributing to tumorigenesis.