Final answer:
The correct answer to the question "What is ATP made from?" is c) Adenine and ribose, since adenosine (a combination of adenine and ribose) combined with three phosphate groups forms ATP.
Step-by-step explanation:
ATP (Adenosine Triphosphate) is an essential molecule in cellular biology, serving as the main energy currency for cells. It is made from adenine, a ribose sugar, and three phosphate groups. When ATP is hydrolyzed into ADP (Adenosine Diphosphate) and an inorganic phosphate group (Pi), it releases the energy needed for various cellular processes. The bond between the second and third phosphate groups is a high-energy phosphoanhydride bond that, when broken during hydrolysis, provides the necessary energy for the cell's activities. The correct answer to the question "What is ATP made from?" is c) Adenine and ribose, since adenosine (a combination of adenine and ribose) combined with three phosphate groups forms ATP.