A man ie human is made up of their body parts the human mind is not separate from their body contrary to popular belief but is a mixture of chemicals.
To answer your question man is his parts.
Hair follicles is the hair coming out of the subcutaneous layer
I believe you use the pH scale with comparing acids and bases.
Chemical (mutagens)
usually either mimic the structure of nucleotides and are inserted in DNA or either cause
chemical changes (such as alkylation) in nucleotides hence causing mismatching during replication.
Radiation, on the other hand, (due to its high energy) causes double-strand breaks in DNA causing an
increased likelihood of mutations during the repair of the DNA by cell
mechanisms.