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:

Unregulated Pure Monopolist

A market condition where a single firm dominates the market without any regulatory oversight, controlling the price and supply of a good or service.

MR = MC

A principle in economics that indicates the profit maximizing level of production is reached when marginal revenue equals marginal cost.

Marginal Revenue

The additional income earned by selling one more unit of a product, reflecting the value of increased sales volume.

Demand

The desire of purchasers, consumers, or clients for a particular good or service combined with the ability and readiness to pay for it.