18.2

What part of a virus determines which host the virus infects?

• Receptor Molecule

• Plasma Membrane

• Surface Proteins

• Nucleic Acids

Viruses that infect bacteria are called

• bacteriophages

• helical viruses

• polyhedral viruses

• prophages

In which of the following types of infection will the infected host cell burst?

• lysogenic infection

• prophage infection

• provirus infection

• lytic infection

The protein shell of a virus is called a

• capsid

• spike

• tail sheath

• envelope

When viral DNA combines with the host cell's DNA, the viral DNA becomes a

• virion

• prophage

• capsid

• membrane