In this electric motor, an electric current causes the coil to rotate, changing A) magnetic energy to electrical energy.
B) electrical energy to a magnetic force.
C) potential energy to electrical energy.
D) electrical energy to mechanical energy.
RIGHT answer only please!

before it leaves the nucleus of a eukaryotic cell, mrna is altered in the following ways: - a cap is added to the 5' end of the mrna molecule; - a poly a tail is added to the 3' end; - introns are removed and exons are spliced together.

answer by yourhope:

answer is

human impact on the environment can be seen in the deterioration of the !

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it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.

if you listed your answers right then i believe your answer is b.