Ventral follicle cells synthesize Pipe. Pipe signal sulfates ventral vitelline proteins

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#Id: 8868

#Unit 2. Cellular Organization

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#Id: 5957

#Unit 10. Ecological Principles

Invertebrates generally have fairly high production efficiencies  (about 10–50%) than vertebrate. Ectotherms, typically have production efficiencies of around 10%, and birds and mammals, which are endotherms, have production efficiencies in the range of 1–2%.

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#Id: 9554

#Unit 11. Evolution and Behavior

Alfred Russel Wallace - Who was collecting specimens in the Malay Archipelago, had independently conceived of natural selection

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#Id: 9217

#Unit 6. System Physiology – Plant

Rubisco catalyzes oxygenation of ribulose 1,5-bisphosphate called C2 cycle

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#Id: 4619

#Unit 13. Methods in Biology

The bacterium Streptococcus pyogenes, for example, expresses cell-wall proteins called M antigens. Antibodies produced to streptococcal M antigens have been shown to cross-react with several myocardial and skeletal muscle proteins and have been implicated in heart and kidney damage following streptococcal infections.