Ch 2: Viruses and Bacteria ADV

True or False

Influenza is caused by a virus.

• true

• false

• Scientists have not yet determined the cause

Antibiotics kill viruses but not living tissue.

• True

• False

• Undetermined at this time

What do viruses need to replicate (reproduce)?

• They need to find genetic material

• They need a host cell

• They need bacteria

• They need insulin

Which shape describes some bacterial cells?

• cube-shaped
• bullet-shaped
• spiral
• robotlike

Unlike the cells of eukaryotes, the cells of bacteria do not have

• a nucleus
• cell walls
• flagellum
• cells

Some bacteria move by using a long, whip-like structure called a(n) ____________________

• tail
• cillia
• organs
• flagellum

HIV is caused by a

• bacterium

• virus

• fungus

• protist

Which of the following can be helpful in treating bacterial diseases but NOT viral diseases?

• vaccines
• antibiotics
• antiviral drugs
• aspirin

Viruses are...

• prokaryotic
• eukaryotic
• non-living
• endospores

Which of the following is not a bacterial shape?

• bacilli
• spirilla
• spacecraft
• cocci