What kind of bacterium would be most likely found in the human stomach?
a. salt-loving
b. acid-loving
c. heat-loving
d. sulfur-loving

b. acid-loving

It would only make sense that the human stomach has the type of bacteria that is "acid-philic" or acid-loving since it is composed of the acidic composition which primarily does the second chemical breakdown of the food consumed. 

The bacterium we would most likely find in a human stomach would be probably an acid-loving bacterium - b. 

The reason for this is simple - the human stomach is quite acidic which enables it to break down a lot of different substances that get carried into the body through digestion. 

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.

Ba1.   a2. c3. d4. b5. b6. c7.   c8. d