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viruses have a)DNA enclosed in protein coatb)prokaryotic nucleusc)both DNA and rna d)single chromosome
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viruses have a)DNA enclosed in protein coatb)prokaryotic nucleusc)both...
Introduction to Viruses
Viruses are unique entities that exist at the border between living and non-living. They are composed of genetic material and a protein coat, but lack cellular structures found in living organisms.
Composition of Viruses
  • DNA Enclosed in Protein Coat:
    Most viruses contain either DNA or RNA as their genetic material, which is enclosed in a protective protein shell called a capsid.
  • Prokaryotic Nucleus:
    Viruses do not have a prokaryotic nucleus. They lack cellular structures and do not possess the machinery necessary for metabolic processes.
  • Both DNA and RNA:
    Generally, a virus will have either DNA or RNA, but not both. Some complex viruses may have segmented genomes, but they still fall into one category—either DNA viruses or RNA viruses.
  • Single Chromosome:
    Viruses do not have a single chromosome like prokaryotes. Instead, they have a genome that can be linear or circular, and it may consist of one or multiple segments.

Conclusion
In summary, viruses are fascinating biological entities characterized by their genetic material (either DNA or RNA), a protective protein coat, and the absence of a cellular structure. Understanding these components is crucial for studying their behavior, replication, and impact on living organisms.
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viruses have a)DNA enclosed in protein coatb)prokaryotic nucleusc)both DNA and rna d)single chromosome
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