Lesson 1.4 - Viruses

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Across
  1. 3. The genetic material of an organism.
  2. 6. The smallest known viruses (about 18-26 nm in diameter). They are non-enveloped DNA viruses. One of them causes ‘fifth disease’ in children, also called slapcheek due to the characteristic’s redness on the cheek.
  3. 7. Non-enveloped DNA viruses that can cause upper respiratory infections.
  4. 8. Protein shell that encapsulates and protects the genome of a virus.
Down
  1. 1. Viral envelopes are derived from the host cell membrane and offer an extra layer of protection as well as help the virus to infect a new host cell.
  2. 2. is a genus that contains the largest classified virus. Its capsid diameter is about 400 nm (the smallest bacteria are in this range).
  3. 4. A process by which the cell absorbs (engulfs) certain molecules or particles from the outside environment by enclosing them in a vesicle made of the cell membrane and importing them inside the cell.
  4. 5. In virology, ‘budding’ is used to describe the process of a virus leaving the cell. As the virus envelopes itself in the cell membrane, it is bulging from the cell surface.