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Inhibitor Proteins - Enzyme-activity Control
One kind of inhibitor protein found in higher plants is an endopeptidase which degrades nitrate reductase thus causing irreversible loss of the enzyme. The other kind includes binding proteins that specifically bind to nitrate reductase leading to permanent inactivation of enzyme. Such inactivator proteins have been isolated from rice seedings and spinach leaves. You will see that the transcription of enzyme is mediated by light. It is unique enzyme in this respect.
Ernst Mayr, for whom, species and species problem have been the main concern of research, points out that speciation, the multiplication of species, that is division of one parent
division o kingdoms
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Autumn (fall) overturn In autumn or early winter the air temperature falls, resulting in the cooling of the surface waters. When the surface water cools to 4°C it becomes dens
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Induction of Defensive Barriers in Plants Several polymers deposited near surface of plants form an effective barrier against invasion or stress. Cuticle (which consists of a
Explain in sequence the events that lead to the development of a 3-celled pollen grain from microspores mother cell in angiosperms.
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