In Influenza Virus,antigenic Shift

question 27

Multiple Choice

In influenza virus,antigenic shift

• A)results from reassortment of genomes when two different strains of flu viruses infect the same cell.
• B)results from the accumulation of mutations in HA and NA in a single strain of flu virus.
• C)can result in major epidemics or pandemics.
• D)results from reassortment of genomes when two different strains of flu viruses infect the same cell and can result in major epidemics or pandemics.

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Definitions:

Antimacassars

Small pieces of cloth or paper placed over the backs or arms of chairs or sofas to protect them from grease or dirt.

Monopolistic Distributor

A sole provider of a product or service in a particular market, facing little to no competition.

Demand Curve

A graphical representation that shows the relationship between the price of a good and the quantity demanded by consumers, usually downward sloping.

Marginal Cost

The cost increase associated with producing an additional unit of a product or service.