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Acellular Infectious Agents: Viruses, Viroids & Prions definitions

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Termini in questo insieme (15)

  • Acellular Infectious Agents
    Noncellular entities lacking cellular structure, unable to live independently, and capable of contaminating and affecting living cells.
  • Virus
    Obligate intracellular parasite composed of DNA or RNA within a protein coat, sometimes with a lipid envelope, infecting all life forms.
  • Viroid
    Single short strand of circular RNA, lacking protein, infecting only plants and causing plant diseases.
  • Prion
    Proteinaceous infectious agent made solely of misfolded proteins, capable of inducing misfolding in normal proteins.
  • Obligate Intracellular Parasite
    Entity that can only replicate inside a host cell, relying entirely on the host for reproduction.
  • Protein Coat
    Protective outer layer surrounding viral genetic material, essential for infecting host cells.
  • Lipid Envelope
    Membranous layer sometimes surrounding a virus's protein coat, derived from host cell membranes.
  • Genetic Material
    Nucleic acid component, either DNA or RNA, carrying instructions for replication within acellular agents.
  • Bacteriophage
    Type of virus specialized to infect and replicate within bacterial cells.
  • Misfolded Protein
    Abnormal protein structure that disrupts normal function and can propagate structural changes to other proteins.
  • Degenerative Disease
    Progressive disorder often linked to prions, characterized by gradual loss of function in affected tissues.
  • Plant Disease
    Disorder in plants caused by infectious agents like viroids, leading to symptoms such as wilting or death.
  • Proteinaceous Infectious Agent
    Disease-causing entity composed entirely of protein, lacking nucleic acids, exemplified by prions.
  • Closed Ring RNA
    Single-stranded RNA molecule forming a covalently closed loop, characteristic of viroids.
  • Cellular Organism
    Living entity composed of one or more cells, in contrast to acellular infectious agents.