Which of the following is NOT a protection

the body’s inner surfaces use against
penetration by harmful microorganisms?



a. thick stratified epithelial layers that prevent
penetration
b. sticky mucus that traps microorganisms
c. lysozyme that kills bacteria
d. cilia that sweeps away microorganims
e. all of these are protection against
penetration by harmful microorganims


A

Biology & Microbiology

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