In an endothermic reaction, energy is absorbed which causes the object to heat up.
ATP is primarily produced in the Mitochondria.
I believe the correct answer from the choices listed above is option 4. This type of research is often successful in advancing knowledge regarding the functioning of human cells because <span>cellular research using mice can always be applied to human cells since all complex organisms produce the same proteins.</span>
Hope this answers the question. Have a nice day.