Question: Is silk denatured by heat?, Answer:Yes, Description of Silk: fine, lustrous, natural fiber produced by the larvae of various silk moths, especially the species Bombyx mori, Fact1: Silk is a natural protein fiber, Fact2: protein is denatured by heat.
Step1: What kind of fiber is silk made of?, Step2: Is #1 denatured by heat?, Wikipedia page for step 1: Silk, Wikipedia page for step 2: Protein, not_definitive_answer: False, incorrect_answer: False