MDCAT Biology MCQ #75

Tobacco Mosaic Virus (TMV) was the first virus to be crystallized. What is the characteristic shape of the TMV capsid?

MDCAT Biology MCQ #75

  1. Question 1

    Q1. Tobacco Mosaic Virus (TMV) was the first virus to be crystallized. What is the characteristic shape of the TMV capsid?

    • A) Polyhedral
    • B) Icosahedral
    • C) Helical
    • D) Tadpole-shaped

    Answer: Helical

    Explanation: TMV is helical (rod-shaped). Adenovirus is icosahedral (polyhedral). This is a fundamental distinction in viral morphology mentioned in PTB.