A Researcher Lyses a Cell That Contains Nucleic Acid Molecules

question 4

Multiple Choice

A researcher lyses a cell that contains nucleic acid molecules and capsomeres of tobacco mosaic virus (TMV) . The cell contents are left in a covered test tube overnight. The next day this mixture is sprayed on tobacco plants. What would you expect to happen to the plants that were sprayed with the mixture?

• A) The plants would develop some but not all of the symptoms of the TMV infection.
• B) The plants would develop the typical symptoms of TMV infection.
• C) The plants would not show any disease symptoms.
• D) The plants would become infected, but extracts from these plants would be unable to infect other plants.

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