Virus review 2.1

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  1. A ____________is a small, nonliving particle that invades and reproduces inside a living cell.
  2. What is a virus called that waits for a while before taking over a cell's functions?
    hidden virus
  3. Viruses are so small that they are measured in  ________________________.
  4. Organisms that live on or in a host and cause harm to the host are called _____________.
  5. Once inside a cell, the ____________takes over the cells functions.  New viruses are then assembled.
    genetic material
  6. The shape of proteins allows the viruses coat to ______________to, or lock onto, certain cells in the host.
  7. Viruses vary widely in ______________.  Some are round, while others are rod-shaped.  Others are bricklike or threadlike.
  8. After entering a cell, an __________virus immediately goes into action.
  9. Like keys, a virus's proteins only fit into certain "__________," or proteins, on the surface of a host's cells.
  10. A ______________________is a virus that infects bacteria.
  11. A _____________is a disease that is mild and makes people sick for a short time before they recover.
  12. No organisms are ____________from viruses.
  13. What two parts of humans bodies does a cold virus affect?
    the nose and throat
  14. The coat of a virus is made of ____________.
  15. Because viruses are not alive, scientists do not use ______________________ to name them.
    binomial nomenclature
  16. A cold sore is an example of a __________ virus.
  17. The only way in which viruses are like organisms is in their ability to ___________.
  18. Scientists are putting viruses to use in a new technique called ____________________.
    gene therapy
  19. A __________is a living thing that provides a source of energy for a virus or organism.
  20. What are the two basic parts of a virus?
    • 1. protein coat for protection
    • 2. inner core made of genetic material
  21. Biologists consider viruses to be nonliving because viruses are not cells.  They do not use energy to __________ or _______________.
    • grow
    • or respond to their surroundings
  22. Viruses cannot make or take in ________ or produce _____________.
    • food or energy
    • wastes
  23. What four ways do scientists name viruses?
    • 1.  after the scientist that discovered them
    • 2.  after the organism that the virus infects
    • 3.  after the place the virus was discovered
    • 4.  after the disease they cause
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Virus review 2.1
Review of viruses for quiz
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