Prokaryotic cells

    Cards (23)

    • What is the lytic cycle of a virus?
      Virus injects DNA, host cell bursts
    • What is the lysogenic cycle of a virus?
      Virus integrates DNA into host DNA
    • What type of nucleic acid do DNA viruses use?
      DNA
    • What type of nucleic acid do RNA viruses use?
      RNA
    • How do viruses enter host cells?
      Through endocytosis or direct injection
    • What are the main differences between eukaryotic and prokaryotic cells?
      • Eukaryotic: membrane-bound organelles, nucleus
      • Prokaryotic: no membrane-bound organelles, no nucleus
    • What are the differences between the lytic and lysogenic cycles of viruses?
      • Lytic cycle: virus destroys host cell after replication
      • Lysogenic cycle: virus integrates into host DNA and replicates with it
    • What are the characteristics of gram-positive and gram-negative bacteria?
      • Gram-positive: thick peptidoglycan layer, retains crystal violet
      • Gram-negative: thin peptidoglycan layer, has outer membrane, retains safranin
    • How do viruses invade cells?
      By binding to receptors on cells
    • Why can't viruses be killed by antibiotics?
      They replicate inside host cells
    • What does the acronym Mrs Gren stand for?
      Movement, respiration, sensitivity, growth, reproduction, excretion, nutrition
    • What happens during endocytosis in viral infections?
      Viruses are taken into the cell
    • How does the lytic cycle differ from the lysogenic cycle in viruses?
      Lytic cycle destroys the host cell, lysogenic does not
    • What is a DNA virus?
      A virus that uses DNA as its genetic material
    • What type of nucleic acid does HIV contain?
      Single-stranded RNA
    • What is the role of the protein coat in a virus?
      Protects the viral genetic material
    • What occurs during the lytic cycle of a virus?
      The virus injects its genetic material into the host
    • What is the significance of the lysogenic cycle in viral infections?
      It allows the virus to remain dormant in the host
    • How do viruses typically infect plant cells?
      Through vectors like insects
    • What is the process of developing new medicines for viral infections?
      It involves multiple phases and testing
    • What are the phases of drug development for viral infections?
      Early research, preclinical, clinical, regulatory testing
    • What is the purpose of vaccines in controlling viral infections?
      To provide some protection against viruses
    • What is the role of hand washing in disease control?
      It prevents the transmission of infections
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