What Chemical Modification of Host DNA Is Used to Protect

question 21

Multiple Choice

What chemical modification of host DNA is used to protect it against cleavage by the host's own restriction enzymes?

• A)methylation
• B)phosphorylation
• C)acetylation
• D)conversion of some cytosine to uracil
• E)conversion of some guanosine to inosine

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Definitions:

Right Decisions

Choices or judgments that lead to the most positive outcome based on ethical, practical, or personal considerations.

Informal Child Care

Child care that is provided by relatives, friends, or neighbors, not through formal settings such as daycare centers or professional caregivers.

Home Child Care

Child care provided in the child’s own home, primarily by a grandmother or other family member, while the parents are at work.

Family Child Care

Child care provided in the home of a relative or someone else.