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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.
Explain about the Serengeti Ecosystem? The Serengeti ecosystem, one of the most stunning biological communities in the world, was devastated by the introduction of rinderpest f
MOD E OF HORMONE ACTION THROUGH EXTRACELLULAR RECEPTORS - The molecules of amino acid derivatives, peptides or polypeptide (protein) hormones bind to specific receptor molecul
which organs are involved in respiration of annelid and what is it called ,what by products are formed and how amount of ATP is released?
In a comparison of brain found in lower classes of vertebrates to the brain in higher classes of vertebrate's area showing most increase in relative size is: a) Optic lobe b
Explain the Ecological niche modelling? The geographic range of organisms frequently reflects their fundamental niche, the range of physical conditions where they can live. Qua
Define Major Sources of water - Water Intake? The preformed water that we consume as water or as beverage. This will include both preformed water in fluids and in foods. The am
Q. Conditions Necessary for outbreak of botulism? The following conditions are necessary for an outbreak of botulism: 1. Presence of spores of C. botulinum of type A, B o
Q. Which is the kind of muscle tissue that contracts and relaxes the heart chambers? The myocardium of the heart is made of cardiac striated muscle tissue.
how do i prove in a diagram that water is needed for photosynthesis
how was life originated
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