Dimethylallyl pyrophosphate serves as the starting point for the biosynthesis of numerous compunds of great importance , including cholestrol and the anti cancer drug tao. describe the first step in the reaction

Ou tof the following given choices;

a.       elimination

b.      SN2 substitution

c.       Dissociation

d.      None of the above

The answer is B. In SN2 substitution, the leaving group is attached to a primary carbon. This is one of the SN reaction of nucleophilic substitution on dimethylallyl pyrophosphate. The other SN1 reaction, which is the more probable reaction because it's more stable.

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.