In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

Question: What molecule is used for most energy functions in organisms? Answer: atp or adenozine triphosphate
Atp or adenozine triphosphate is used for most energy functions in organisms.

Question: Muscle atrophy due to age is called what? Answer: sarcopenia
Muscle atrophy due to age is called sarcopenia.

Question: In science, what is defined as a change in position? Answer: motion

In science, motion is defined as a change in position.