Which description is incorrect for the layers of the heart and its serous membranes? which description is incorrect for the layers of the heart and its serous membranes? the parietal pericardium is on the deep side of the fibrous pericardium. the epicardium is also considered the parietal pericardium. the endocardium is the deepest of the layers related to the heart. the fibrous pericardium prevents overfilling of the ventricles?

oxygen +1 most likely

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.