How do bacteria cause illness?

Bacteria cause disease by secreting or excreting toxins, by producing toxins internally, which are released when the bacteria disintegrate , or by inducing sensitivity to their antigenic properties.

its d lol

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nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides