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: What type of organisms do not need blood? Answer: single-celled
Single-celled type of organisms do not need blood.

Question: What type of isotopes have short half-lives and are given in very low doses? Answer: radioisotopes

Radioisotopes type of isotopes have short half-lives and are given in very low doses.