alleryStart learning →Tobacco mosaic virus is long and cylindrical, which places it in which shape group?
AFilamentous
BHead and tail
CIsometric
DEnveloped
Answer & Solution
Correct answer: A. Filamentous
1. Filamentous viruses are long and cylindrical in shape.
2. Many plant viruses take this shape, and tobacco mosaic virus is one of them.
3. Isometric viruses are roughly spherical, so that group does not fit a long cylinder.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 21 "Viruses", section 21.1 Viral Evolution, Morphology, and Classification_
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