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Which physical elements contributed to the great amount of available energy on the primitive earth at the time of the origin of life?
3.5 billion years since the water cycle was faster than today, resulting in hard storms with intense electrical discharges. There was as well no chemical protection from the ozone layer against ultraviolet radiation. Temperatures in an atmosphere and on the planet surface were very high. Electricity, radiation and heat constituted large available energy sources.
Principles Governing Cleavage a) The nucleus and mitotic achromatic figure tend to occupy the centre of active cytoplasmic density of the dividing cells, e.g., in isolecithal
What is the type of genetic inheritance of daltonism? Is daltonism more frequent in men or in women? What is the physiological explanation for the daltonism ? The Daltonism
Features of the Gastrulation The significant features of the gastrulation are: a) Proteins of many new types that were not present in the egg or blastula begin to be synthe
Plants are supplied with adequate amount of phosphorus Phosphorus has also been associated with early maturity of crops particularly the cereals. Its shortage is accompanied by
Food borne intoxications are basically food borne illness caused due to ingestion of toxin produced my microorganisms (mycotoxins, bacterial toxins). Natural toxins present in food
Protein Stabilized Food Emulsions Many food products are emulsions (eg. milk cream, ice creams, cream, butter etc.) and protein constituents often play a major role in the stab
Why is the determination of the blood types of the donor and of the recipient important in transfusions? The Red blood cells have different antigens in the outer surface of the
This is the amount of blood that is returned to the heart by the veins. This is influenced by various factors. Inspiration decreases the pressure in the central veins and thus inc
the main excretory system in lower animals
Pancreas Insulin (β cells) Promotes glucose entry in many cells, and in this way controls carbohydrate metabolism. Glucagon (α cells) Increases synthesis and release of
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