The most accurate portrayal of ATP is that
A)ATP is a fuel.
B)ATP is a storehouse of energy set aside for some future need.
C)ATP is an energy-coupling agent and is formed and used as needed.
D)ATP is produced and consumed by the same reaction.

Question

Quizplus · Accepted Answer

ATP is not a fuel because it does not have a long-term energy storage capacity. It is also not a storehouse of energy set aside for some future need because it is constantly being used and replenished. The most accurate portrayal of ATP is that it is an energy-coupling agent that is formed and used as needed in cellular processes. The energy released from the breakdown of other molecules is used to synthesize ATP, which is then used to power cellular processes requiring an input of energy. Therefore, option C is the most accurate portrayal of ATP. Option D is incorrect because ATP is produced and consumed by separate reactions.

The Most Accurate Portrayal of ATP Is That