Regarding the endothelium, what is the difference between healthy vessel walls and those that promote clot formation?

The difference between healthy vessel walls and those that promote clot formation would be that inflammation and roughening of the endothelium of the artery are present for arteries promoting clot formation. Being infected would cause the lining of the artery to roughen resulting for the platelets to adhere to the surface.

I’m going to go with b!

Answer:

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

explanation:

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.