small living things that can make you ill
Topics:Biology Forensic Pathology Infant Nutrition Cells and Organ Systems Careers in Health Care Chemistry Cardiology Services Med Terms Fluid and Electrolytes Dermatology Vocabulary Forensics Terms Medical Terminology Prefixes Genetic Engineering Medicine on the Western Front Heredity Biodiversity Conservation
Other quiz: Microbiology
Keratin is an important aspect of nonspecific defense because it
A. destroys pathogens.
B. is toxic to pathogens.
C. physically restricts pathogens to a specific region.
D. creates a physical barrier against pathogens