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: Silk and cotton are examples of what type of fibers?
Example Output: mechanical

Example Input: What secretion initiates chemical digestion while also protecting the oral cavity?
Example Output: lymph

Example Input: What type of molecules are secreted by the cell in local signaling?
Example Output:
word molecules