Wool and silk are categorized as what type of fibers?

Wool and silk are classified as protein fibers because they are derived from animal sources. Wool comes from sheep, while silk is produced by silkworms. These fibers are composed primarily of proteins, such as keratin in wool and fibroin in silk, which are responsible for their unique properties, including thermal insulation, elasticity, and ability to absorb moisture. This categorization distinguishes them from cellulosic fibers, which are derived from plant sources, synthetic fibers that are chemically manufactured, and mineral fibers that are inorganic in nature. Understanding the classification of fibers is crucial for professional carpet cleaning technicians, as it impacts the selection of appropriate cleaning methods and products based on the specific fiber type.