A Particular Type of Virus Occasionally Undergoes Antigenic Shift

question 12

Multiple Choice

A particular type of virus occasionally undergoes antigenic shift. In which of the following situations is antigenic shift most likely?

• A) when RNA polymerase makes a mistake, introducing an incorrect nucleotide
• B) when the proofreading ability of RNA polymerase does not function properly
• C) when a particular host cell is infected by a single strain of the virus
• D) when a particular host cell is infected by two strains of the virus at the same time
• E) when the proportion of immune individuals in the population is low

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Definitions:

Current Ratio

It's a financial ratio that calculates whether a corporation can cover its obligations that need to be paid within one year, by dividing the current assets by the current liabilities.

Plant Assets

Tangible assets that are used in the operations of a business and are not intended for resale, including buildings, machinery, and equipment.

Natural Business Year

The fiscal year that ends when a business's activities have reached the lowest point in its annual operating cycle, theoretically the most optimal time for financial reporting.

Adjusting Entry

A journal entry made at the end of an accounting period to allocate income and expenditure to the appropriate years.