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Explain the Mechanism of Phagocytosis
In phagocytosis, the organism is entrapped into vacuoles known as "Phagosome". The cytoplasmic granules, organelles or lysosomes fuse with the phagosome releasing powerful microbicidal substance. These substances are divided into:
a) Those which are dependent on O2 mechanism, and
b) Those which are O2 independent mechanisms
Example for O2 dependent mechanism is superoxide anion, singlet O2 hydroxyl free radicals. The O2 independent ones are lysosomes, proteolytic enzymes and several other hydrolytic enzymes.
Define Carbohydrates Sugar, like a candle, can burn but burning requires oxygen. We eat to do work. To do their work, cells need an important group of food known as 'carbohydr
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What is Decarboxylation Reaction and Biogenic Amines What are biogenic amines? Any of a group of naturally occurring, biologically active amines, such as norepinephrine, histam
why do we get shock when we touch an open wire?
Enumerate in brief about the Earthworms There are several species of earthworms, having slender cylindrical bodies with varying diameters. These organisms ingest the dead organ
The mop weighs less Put a floor mop in water. Wring it out and then balance it on a triangular file placed on the corner of a table. Be sure you have it carefully balanced. Loo
Storage of Chemicals : You have read about the stores as important structures of all the labs in previously. Storage of chemicals whether in small amount or in bulk is another imp
What is permanent wilting percentage As plants absorb water from a soil, they lose most of it through evaporation at the leaf surface. Some water is also lost by evaporation d
Experiments with man in space: We have already discussed the usefulness of space flights in Blocks 3&4. One is able to make astronomical observations from satellites; get met
Describe the factors which decide the broad area of Scientific activity.
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