Viruses

=Unit 1 Cells and Systems=

Chapter 1 The cell is the basic unit of life.
1.2 Cells


 * 1.2 Viruses** page 34

Viruses (HIV, chicken pox, cold sores) are tiny non living particles that reproduce only when they are inside a host cell. A virus particle contains no nucleus or any other organelles, and carries only information required in the form of DNA to reproduce. Viruses come in many different shapes and sizes.

2nd answers by: Sasha Ocean in form of DNA to reproduce itself. || For a virus to reproduce, it must have the help of another living thing to help carry DNA to reproduce. || of the host cell and "tricks" the cell into making new virus particles || The virus must get DNA into the hosts nucleus and get the cell into making new particles (virus). ||
 * || ===Answer=== ||
 * 1. How do viruses reproduce? || By carrying the only information necessary
 * 2. True or False? A virus particle has no nucleus or any other organelles. || True; a virus is non living || True, a virus is not living. ||
 * 3. What does a virus need to have all the functions? || a host cell || To have all the functions, a virus must have a host cell. ||
 * 4. How does a virus make new virus particles? || a virus inserts its DNA into the nucleus
 * 3. What does a virus need to have all the functions? || a host cell || To have all the functions, a virus must have a host cell. ||
 * 4. How does a virus make new virus particles? || a virus inserts its DNA into the nucleus
 * 5. When do new viruses release out of a host cell? || When the host cell bursts || When the host bursts. The bigger the burst, the more virus particles. ||
 * 5. When do new viruses release out of a host cell? || When the host cell bursts || When the host bursts. The bigger the burst, the more virus particles. ||