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Which type of cell came first in evolution the eukaryotic cell or the prokaryotic cell?
Ans) This is an interesting problem of biological evolution. The most accepted hypothesis asserts that the more easy cell, the prokaryotic cell, appeared early in evolution than the more difficult eukaryotic cell. The endosymbiotic hypothesis, for example, affirms that aerobic eukaryotic cells appeared from the mutualist ecological interaction among aerobic prokaryotes and primitive anaerobic eukaryotes.
Q. What are the chemical substances produced by water photolysis and what is the destination of each of those substances? Free electrons, molecular oxygen and hydrogen ions are
what happens to your total peripheral resistance when you go from a warm room to cool outside air
Each ventricle has an inflow part beginning just in front of the corresponding atrioventricular orifice and running forwards to the left towards the apex of the heart. The cavity t
EXAMPLES OF NATURAL SELECTION - 1 . INDUSTRIAL MELANISM - First studied by Fischer & Ford (1845) on pepperd moth (Biston betularia) of two types : grey moth (B.
Q. Vitamins and minerals requirement in chronic diarrhoea? Loss of vitamins is related to the degree of mucosal damage in chronic diarrhoea, which in turn impairs absorption an
Explain the Oligosaccharides (DP: 3-9) - carbohydrates? Oligosaccharides consists of short chains of monosaccharide units joined by covalent bonds. The glycosidic bond may be α
Gibberellins in plant growth Gibberellins were first isolated from the culture of a fungus Gibberella fujikuori. Gibberellins has a significant effect on stem elongation
Define each term and give an example of an application that uses the following: a. Biocompatible material b. Biodegradable material c. Biomimetic
It is elimination of an antigen or antibody from a sample by the process of adsorption, to which the complimentary antigen or antibody is bound.
Conformational Protection - Azotobacter In conformational protection a Fe-S redox protein provides protection to the enzyme. The protein gets oxidised in the presence of oxyge
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