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Fischer 's template or lock and key model
According to this model, the catalytic site of the enzyme has a proper conformation compatible to a specific substrate even in the absence of the substrate molecule. The catalytic site binds the substrate and catalyzes the reaction without any change in its own three dimensional conformation. It has become possible to explain the specificity of many enzymes for only one of the stereoisomers of the substrate by this model.
Q. What is the difference between obligate anaerobic beings and facultative anaerobic beings? Obligate anaerobic beings are those that cannot survive when oxygen is present. So
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In the fruit fly Drosophila, a rudimentary wing called "vestigial" and dark body color called "ebony" are inherited at independent loci and are recessive to their dominant wild-typ
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