Viruses

What do viruses need to reproduce?

• they need genetic material
• They need a host cell
• They need  bacteria
• They need insulin

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

What is a way to become immune to a disease without first having the disease?

• antibiotics
• Anti-retroviral drugs
• Vaccinations
• Exposure Therapies

Which can be treated with antibiotics?

• Virus
• Bacteria
• Mutagen
• Parasite

Viruses trick host cells into making copies of the virus

• True
• False

Which of the following occurs after a virus attaches to a host cell

• The host cell dies
• The virus dies
• The virus inserts its genetic information into the host cell
• the virus eats the cell

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

How does a virus cause a person to develop the common cold?

• invades the host cell to reproduce
• removes energy from the host cell
• produces toxins in the host cell
• protects the host cell from bacteria