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Explain the Erythropoiesis
Erythropoiesis, derived from the word 'erythros' meaning red and 'polesis' meaning making, is a part of a broader process, hemopoiesis, i.e., formation of blood cells in general. Let us get to know about it. The precursor 'of all blood cells is a primitive stem cell, also called as a Totipotent Hematopoietic Stem Cell (THSC). THSC is a cell capable of rapid proliferation accompanied by differentiation. Differentiation of the THSC is associated with subtle biochemical changes, which eventually result in a cell committed to forming a specific variety of blood cell. The process of proliferation and differentiation continues till the mature blood cells, incapable of proliferation, are formed.
Heaping water up in a glass Place a drinking glass in a shallow pan or on a saucer. Rub the top edge of the glass with a dry cloth. Pour water into the glass unless it is full
Define the visual area of the Cerebrum The visual area lies behind the parieto-occipital sulcus and includes greater part of occipital lobes. Optic nerve passes from eyes to th
Darwin and Natural Selection: The English naturalist Charles Darwin (1809-1882) explained how biological evolution took place, in his remarkable "The Origin of Species" in
Apoenzyme :- The protein portion of an enzyme requiring a cofactor for its reaction.
A low-gradient stream would most likely form a: meander
lmmunoglobulin G - classification of antibodies Major defence against bacteria and their toxins. It is the major Ig - 80% in the body, can cross the capillary wall very easily
Acid solution weathering Weathering is accelerated by the presence of the hydrogen ions in water. Rain water dissolves CO 2 from air to form carbonic acid, H 2 CO 3 . When t
Prevention of disease: Now that we know that infectious diseases are caused by microbes, it should be possible to prevent diseases by controlling their transmission and proper
Simple hydraulic press The principle of the hydraulic press is illustrated by the following model. Half fill a cylindrical jar with water. Pour melted paraffin wax on the su
Define the functions of the Macrophages The macrophages: 1) phagocytose microorganisms and inert particles 2) secrete IL-1 (Interlukin I), TNF (tumor necrosis factor),
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