Question

which is not a protective mechanism used by skin to prevent microbial infection?
o acidic ph of sweat
o synthesis of vitamin d
o interlocked keratinocytes
o release of sebum

Explanation:

Sebum creates a protective layer on skin, acidic pH of sweat inhibits microbial growth, and interlocked keratinocytes form a physical barrier. Vitamin D synthesis by skin is mainly for calcium - metabolism regulation and not a direct protective mechanism against microbial infection.

Answer:

C. synthesis of vitamin D