Why Isn't Bacterial DNA Digested by the Restriction Enzymes Bacteria

question 21

Multiple Choice

Why isn't bacterial DNA digested by the restriction enzymes bacteria produce?

• A)The sequence recognized and cleaved by a restriction enzyme is not found in the bacterial genome.
• B)Bacterial cells have high concentrations of ligase which immediately repairs the any sites that are cleaved.
• C)Methyl groups added to the bases of restriction enzyme recognition sites within the bacterial chromosome block cleavage.
• D)Bacterial DNA is modified with phosphate groups that prevent the function of restriction enzymes.
• E)Restriction enzymes are found in the cytoplasm and DNA is only in the nucleus.

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A suffix used in medical terms to denote the surgical crushing of a stone or calculus.

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A suffix used in medical terminology to indicate the surgical removal of a specified part of the body.

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A suffix used in medical terminology to describe conditions related to urine, such as polyuria (production of a large volume of urine) or hematuria (presence of blood in urine).