Back to quiz

6. Release of some bacterial viruses is sometimes an ___________

  • Enzymatic process
  • Neurological response

7. Viruses contain no enzymes of energy metabolism, thus ________ make ATP

  • Can't
  • Can

8. Ellerman and Bang, and Rous reported that viruses could cause ________

  • Mouth
  • Headaches
  • Cancer
  • Feet

9. Hershey Dixon and Chase found that virus bacteriophage contained a different type of cytosine, and this could be used to estimate prescence of phage DNA

  • True
  • Fasle

10. This nucleic acid can be in a variety of physical forms that can be used as a valuable classification feature

  • True
  • False

11. Many animal viruses remain infectious for very long outside the host

  • False
  • True

12. Virus classification is based on _________

  • Analysis of the particle
  • The symptoms to the host

13. In animal viruses, some viral protein enters the cell along with viral genome

  • True
  • False

14. This involves fusion for enveloped viruses, and conformational changes in receptor binding proteins

  • Penetration
  • Adsorption
  • Replication
  • Eclipse

15. Viruses can be seen by _________

  • Electron microscopes
  • Light microscopes

16. All RNA viruses must encode RNA-dependent RNA polymerase

  • True
  • False

17. Animal viruses are mostly icosahedral (regular polyhedron with 12 corners, 20 faces, 30 edges) or____________

  • Helical
  • Square
  • Triangular

18. Some viruses are the size of eukaryotic cells

  • False`
  • True

19. Viruses ________ synthesise ribosomes

  • Can't
  • Can

20. During _______ the viral proteins bind to specific molecules on cell surfaces, for flu, HA binds to sialic acid

  • Adsorption
  • Penetration