Based on your knowledge of your body sample microbes and the antibiotics used for this experiment, formulate a hypothesis regarding the resistance of the microbes to each of the drugs. For example: "Body sample microbes will exhibit resistance to penicillin and will be inhibited by novobiocin and gentamicin."

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added

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.