2. All of the following are differences between RNA and DNA except
ORNA has uracil instead of thymine.
O RNA is single stranded and DNA is double stranded.
ORNA has ribose sugar instead of deoxyribose.
ORNA is found only in prokaryotic cells, while DNA is found in both.

Option D. RNA is found only in prokaryotic cells, while DNA is found in both, is the correct option.

Explanation:

RNA is found in all cells i. e. Prokaryotic and eukaryotic cells. RNA is a molecule which is responsible for the production of protein for the cell. The main difference between DNA and RNA structure is uracil in place of thymine and ribose sugar in place of deoxiribose.

RNA is found only in prokaryotic cells, while DNA is found in both.

Explanation: RNA is found in all cells both prokaryotic and eukaryotic cells. RNA is a single stranded nucleic acid that contains the information for the production of proteins. There are three classes of RNA: messenger RNA, transfer RNA and ribosomal RNA, and they are all found in every living cell whether prokaryotic or eukaryotic cells.

what bodys are there orbiting?

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.