Plasmalogens are ether glycerophospholipids in which the alkyl moiety is cis-a, b-unsaturated

      

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#XL - T Zoology

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#XL - T Zoology

An important signal transduction protein that binds to PI 3-phosphates is protein kinase B (Akt),  a serine/threonine kinase

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#XL - R Botany

The hydrolyzing enzyme, myrosinase (a thioglucosidase), is stored in different cells than its substrates. While myrosinase-containing cells are mostly glucosinolate-free, the so-called sulfur-rich cells (or S-cells) contain high concentrations of glucosinolates.

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#XL - T Zoology

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

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#XL - R Botany

Tannins deter feeding by herbivores

Plant tannins also serve as defenses against microorganisms.

For example, the nonliving heartwood of many trees contains high concentrations of tannins that help prevent fungal and bacterial decay