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Biology · BIOLOGICAL CLASSIFICATION

हिन्दी

Examine the diagram of Tobacco Mosaic Virus (TMV) provided in Figure 2.6(a). Which statement correctly details the identity and structural features of the labelled components?

  1. Single-stranded RNA core surrounded by a protective protein capsid made of capsomeres
  2. Single-stranded DNA enclosed by a chitinous coat
  3. Double-stranded DNA core wrapped in a phospholipid bilayer
  4. Double-stranded RNA core encased in a peptidoglycan cell wall

Correct answer · Option 1

Single-stranded RNA core surrounded by a protective protein capsid made of capsomeres

Explanation

Figure 2.6(a) shows TMV consisting of a central single-stranded RNA molecule encased in a protein coat called capsid, which is composed of subunit structures termed capsomeres arranged helically.
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