Bio Exam #3

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Bio Exam #3
2014-04-06 20:59:18
bio vocab

Animals vocabs
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  1. Ammonia, Urea, Uric acid
    Ammonia is a small, toxic molecule (NH3) produced by nitrogen fixation or as a metabolic waste product of protein and nucleic acid metabolism

    Urea is a soluble nitrogenous waste produced in the liver by a metabolic cycle that combines am- monia with carbon dioxide.

    Uric Acid is a product of protein and purine metab- olism and the major nitrogenous waste prod- uct of insects, land snails, and many reptiles. Uric acid is relatively nontoxic and largely insoluble.
  2. Arbuscular mycorrhizae
    A symbiotic fungus whose hyphae grow through the cell wall of plant roots and extend into the root cell (enclosed in tubes formed by invagination of the root cell plasma membrane).
  3. Chitin
    A structural polysaccharide, con- sisting of amino sugar monomers, found in many fungal cell walls and in the exoskeletons of all arthropods.
  4. Ecdysis
    the moulting of the cuticula in arthropods and related groups
  5. Ectothermic vs Endothermic
    Ectothermic is referring to organisms for which external sources provide most of the heat for temperature regulation.

    Endothermic is referring to organisms that are warmed by heat generated by their own metabolism. This heat usually maintains a relatively stable body temperature higher than that of the external environment.
  6. Malpigian tubule
    A unique excretory organ of insects that empties into the digestive tract, removes nitrogenous wastes from the hemolymph, and functions in osmoregulation.
  7. Mycorrhizae
    mutualistic association of plant roots and fungus.