Quiz#5 Viruses

An infectious particle made of DNA or RNA surrounded by protein is a

• virus

• bacteria

• viroid

• prion

How are viruses different from bacteria?

• Bacteria have organelles, viruses don't.

• Viruses have genetic material, bacteria do not.

• Viruses cannot reproduce on their own, bacteria can.

• Bacteria cause diseases and viruses don't.

A plant was attached by a pathogen which stunt its growth (the plant was prevented from growing properly). Which pathogen was likely responsible?

• bacteria

• prions

• viruses

• viroids

Viruses that infect bacteria are called

• helical viruses

• bacteriophages

• prophages

• polyhedral viruses

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

• virion

• capsid

• prophage

• membrane

The protein covering of a virus is called a

• spike

• tail

• envelope

• capsid

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

• provirus infection

• lysogenic infection

• lytic infection

• prophage infection

What do viruses need to reproduce?

• genetic material

• another virus

• endocytosis

• a host cell

What structural parts do ALL viruses have?

• RNA and capsid

• DNA and capsid

• genetic material and capsid

• lipid envelope and capsid

Genetic material of a virus combines with the host cell's DNA during

• lysogenic infection

• lytic infection

• conjugation

• plasmid exchange