Bacteria & Viruses

A(n) _____ is a virus that enters a bacterial cell.

• endospore
• decomposer
• plasmid
• bacteriophage

Viruses are...

• prokaryotic
• eukaryotic
• non-living
• endospores

Why do doctors suggest people get a flu vaccine every year?

• Flu viruses replicate more rapidly over time
• Flu viruses can mutate from year to year
• Vaccines are absorbed by the body after a year
• Vaccines get stronger over time

Vaccines 

• Prevent people from coming in contact with viruses
• give the immune system a preview of the virus 
• Prevent all viral infections
• Only work on small children

Viruses 

• have many cells
• are misfolded proteins
• are a protein coat around genetic material
• endospores

Which of the following is one important difference between a virus and a bacterial cell?

• a virus is much larger in size than a bacterial cell
• a virus always causes more severe disease than a bacterial cell
• a virus can never reproduce on its own, but a bacterial cell can
• a virus does not contain genetic material, but a bacterial cell does

Prokaryotes ___________ in that their cells.

• lack nucleus
• have membrane organelles
• have nucleus
• lack ncleic acids

In this diagram the bacteria can move using it's ___________.

• psuedopod
• DNA
• flagella
• medusa hair

Name this bacteria shape

• bacillus

• coccus

• spirillum

Name this bacteria shape

• coccus

• bacillus

• spirillum