100 pts
which of the following would not prevent an mrna from being transported to the rough endoplasmic reticulum in the cytoplasm?

the ends of the mrna were not modified.
the mrna was not correctly spliced
the mrna was not bound by a ribosome.
the mrna is for a secreted protein.

what type of mutation could cause the 3-nucleotide reading frame of trna to be shifted?

switching a normal nucleotide for an abnormal one

deletion of one or more nucleotides during replication

replacing an amino group

incorrect base pairing

i believe the answer is c

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.