A Researcher Lyses a Cell That Contains Nucleic Acid Molecules

question 34

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. Which of the following would be expected to occur?

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

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Definitions:

Intellectual Developmental Disability

A disorder characterized by significant limitations in both intellectual functioning and in adaptive behavior, which covers a range of everyday social and practical skills.

Fragile X Syndrome

A genetic disorder characterized by mild-to-moderate intellectual disability, especially more common in males, due to mutations in the FMR1 gene.

Phenylketonuria

A rare genetic disorder in which the body cannot break down the amino acid phenylalanine, potentially leading to brain damage if untreated.

Fragile X Syndrome

A genetic disorder characterized by intellectual disability, behavioral and learning challenges, and various physical characteristics.