Biolo1100 Chapter 16 Prokaryotes: The First Single-Celled Creatures
  1. Prokaryotes are small organisms in kingdom Bacteria   and Archaea  .

     
  2. Viruses are intracellular parasites   and can reproduce only within host   cells.



     
  3. The human immunodeficiency virus (HIV) is a retrovirus   that infects human white blood cells.



     
  4. The influenza virus is another RNA   virus noted for its mutability.