Which option would be the LEAST effective initial line of defense against pathogens?
A)Thin,unkeratinized skin of a salamander
B)Strong stomach acid
C)Thick mucus coating the trachea
D)Lysosomes in the fluid bathing the eye
E)Exoskeleton of a beetle

Question

Quizplus · Accepted Answer

The thin, unkeratinized skin of a salamander would not provide much protection against pathogens compared to the other options listed. Stomach acid, mucus, lysosomes, and exoskeletons all serve as physical or chemical barriers to prevent pathogens from entering or infecting the body.

Which Option Would Be the LEAST Effective Initial Line of Defense