Given a scientific question, generate an incorrect answer to the given question. The incorrect answer should be a plausible alternative to the correct answer. The answer should be some other item belonging to the same category as the correct answer but should be incorrect.

Example Input: What is the hollow sac like organ that stores urine until it is excreted?
Example Output: kidney

Example Input: Which cell gives rise to all cells of the human body?
Example Output: signaler stem cell

Example Input: A lipid is one of a highly diverse group of compounds made up mostly of what?
Example Output:
nucleic acid