What processes in a cell need the energy from atp

Ineed to know why d is the correct answer asap

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

Patient has just received an organ transplant which treatment would be most effective in preventing the patient’s body from