Prokaryotes and Viruses
Single-celled organisms that are too
small to be seen without a microscope
Bacteria are the smallest living
Viruses are smaller but are not alive
Whats the criteria for being alive?
PROKARYOTES AND VIRUSES
What historic figure died of a disease that had
symptoms consistent with West Nile encephalitis?
Alexander the Great
d. Queen Elizabeth I
What is the difference between a bacteria, archaea and virus?
Bacteria and archaeans are single-celled, and their DNA is not contained within a
What is a Virus?
- A virus is a noncellular infectious agent that consists of a protein coa