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:

Incorrect Case

The use of a wrong form of a noun, pronoun, or adjective in a sentence, based on grammatical rules of languages that have case distinctions.

Dangling Modifier

A word or phrase that modifies a word not clearly stated in the sentence, often leading to confusion or a humorous misinterpretation.

Modifier

A word, phrase, or clause that qualifies or describes another word, phrase, or clause, altering its meaning.

Em Dash

A punctuation mark (—) used to create a strong break in the structure of a sentence or to add emphasis to a part of the sentence.