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Name the features A to I below
I…read more

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Bacterial DNA
· One large circular chromosome
· May also contain a circle of DNA called a
· Not associated with histones…read more

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Variation in bacterial DNA
· Occurs by mutation
· Change in the base sequence of DNA
· Leads to an alteration in the proteins
produced and the characteristics of the cell
· This may allow them to become resistant to
antibiotics…read more

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· Are ........
· Substances produced by living organisms that
can destroy or inhibit the growth of
microorganisms…read more

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Osmotic lysis
· The antibiotic prevents the formation of
bacterial cell walls.
· Water can then enter the cell, causing it to
swell and burst.
· This is osmotic lysis…read more

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