what do saliva, tears, and nasal mucus have in common?\no all can be classified as biological barriers.\no…
what do saliva, tears, and nasal mucus have in common?\no all can be classified as biological barriers.\no all contain langerhans cells.\no all can destroy bacterial cell walls.\no all are part of the complement system.
Answer
Brief Explanations:
Saliva, tears, and nasal mucus are first - line defenses. They act as physical and chemical barriers against pathogens, classifying them as biological barriers. Langerhans cells are in the skin and mucosa but not a common feature of these three. Lysozyme in them can damage bacterial cell walls but not all of them always do this. They are not part of the complement system which is a set of proteins in the blood.
Answer:
All can be classified as biological barriers.