Viruses

Viruses are considered living organisms.

• True

• False

Viruses reproduce by entering a host cell.

• True

• False

All viruses are the same shape and size

• False

• True

A vaccine helps the body produce chemicals that destroy pathogens.

• True

• False

Viruses can use food for energy to grow.

• False

• True

A virus is measured in:

• Millimeters

• Millimeters

• Nanometers

• Meters

The common cold virus is about:

• 75 nm wide

• 7,500 nm wide

• The size of a red blood cell

• d) None of the above

What is a host?

• A type of virus

• A medicine that kills viruses

• An organism that provides a place for a virus to multiply

• A protein coat that protects viruseas

Viruses cannot:

• Infect living cells

• Reproduce on their own

• Cause disease

• 6. Be prevented by vaccines

How do viruses reproduce inside a host cell?