[Campbell Biology P.449] Which of the following statements accurately describe a structural ... | Practice Question

Which of the following statements accurately describe a structural or genomic feature of the viruses discussed in the provided text?

  • A: Tobacco mosaic virus (TMV) is characterized by a rod-shaped, helical capsid and a single helical RNA molecule.
  • B: Adenoviruses have an icosahedral capsid and contain double-stranded DNA.
  • C: Influenza viruses acquire a membranous envelope, containing both host cell phospholipids and viral glycoproteins, from the host cell.
  • D: Bacteriophage T4 possesses a simple, rod-shaped capsid and uses single-stranded RNA as its genetic material.
  • E: The individual protein subunits that make up a viral capsid are referred to as virions.

Explanation

The text explicitly states that Tobacco mosaic virus TMV has a rigid, rod-shaped helical capsid made of protein molecules arranged around a single helical RNA molecule. Adenoviruses are described as having an icosahedral capsid and containing double-stranded DNA. Influenza viruses are noted to have a membranous envelope derived from the host cell, which contains host cell phospholipids, membrane proteins, and viral proteins/glycoproteins. Bacteriophage T4 has a complex capsid not simple rod-shaped and contains double-stranded DNA not single-stranded RNA . The individual protein subunits making up the capsid are called capsomeres, not virions a virion is a complete virus particle .