Positive Stranded RNA Viruses Characteristics Quiz

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Questions and Answers

What surrounds the nucleic acid of a virus?

  • Mitochondria
  • Protein coat (correct)
  • Lipid bilayer
  • Cell membrane

Which components are involved in viral replication?

  • Lysosomes, Golgi apparatus, endoplasmic reticulum
  • Cytoskeleton, cytoplasm, nucleus
  • Chloroplasts, vacuoles, peroxisomes
  • Viral m RNA, viral t RNA, and viral ribosomes (correct)

What type of RNA viruses have positive strands?

  • Negative stranded RNA viruses
  • Double-stranded RNA viruses
  • Positive stranded RNA viruses (correct)
  • Neutral stranded RNA viruses

What is the main function of viral ribosomes in a viral infection?

<p>Produce viral proteins during replication (B)</p> Signup and view all the answers

Which organelle is NOT typically involved in the replication of a virus?

<p>Lysosomes (D)</p> Signup and view all the answers

Which type of virus is Rotavirus?

<p>Double-stranded RNA (D)</p> Signup and view all the answers

How is Rotavirus primarily transmitted?

<p>Faecal-oral route (D)</p> Signup and view all the answers

What is a key method for preventing Rotavirus infection?

<p>Vaccination (B)</p> Signup and view all the answers

What is the incubation period for Rabies virus?

<p>7 days to several years (D)</p> Signup and view all the answers

How is the infectivity of Rabies virus affected by lipid solvents?

<p>Destroyed (D)</p> Signup and view all the answers

Why is purifying proteins directly from viral particles considered expensive?

<p>Virus preparation in large quantities is challenging (B)</p> Signup and view all the answers

What is a primary concern associated with purifying proteins directly from viral particles?

<p>Risk of virulent virus contamination (C)</p> Signup and view all the answers

Why is it challenging to prepare virus in large enough quantities for protein purification?

<p>Virus propagation is time-consuming (C)</p> Signup and view all the answers

What makes purifying proteins directly from viral particles potentially dangerous?

<p>Possibility of virus contamination (A)</p> Signup and view all the answers

In the context of protein purification, what could be an implication of contaminating virulent virus during the process?

<p>Reduced protein quality (C)</p> Signup and view all the answers

Where does the assembly of herpes viruses virion occur?

<p>Nucleus (D)</p> Signup and view all the answers

How can prevention of HSV-1 infection be achieved?

<p>Avoiding physical contact (A)</p> Signup and view all the answers

Which human herpes virus is associated with disorders of the immune system?

<p>Human herpes virus-6 (D)</p> Signup and view all the answers

What is the cause of mononucleosis, hepatitis, and can be transmitted through sexual contact?

<p>Human herpes virus-5 (A)</p> Signup and view all the answers

How do herpes virus 1 vaccines significantly impact disease?

<p>Reduce the incidence and severity of disease (C)</p> Signup and view all the answers

What is a common occurrence in infected cells according to the text?

<p>Production of nucleic acid-free helical particles (B)</p> Signup and view all the answers

What is a distinctive feature of the empty helical particles produced in infected cells?

<p>Lack of nucleic acid (C)</p> Signup and view all the answers

How do infected cells differ in terms of helical particle production compared to healthy cells?

<p>Infected cells produce less helical particles (C)</p> Signup and view all the answers

What is a consequence of the excess production of empty helical particles in infected cells?

<p>Accumulation of non-functional particles (B)</p> Signup and view all the answers

Which statement accurately describes the helical particles produced in infected cells?

<p>Contain a high amount of nucleic acid (B)</p> Signup and view all the answers

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