Viruses

What do all viruses need to reproduce?

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

A(n) _____ is a virus that enters a bacterial cell.

• endospore
• decomposer
• plasmid
• bacteriophage

Antibiotics kill viruses

• True
• False

A capsid is

• a structure that directly causes cell lysis
• the type of virus that attacks bacteria
• the genetic material of a virus
• the protein coat of a virus

The genetic material of a virus is in the form of

• RNA
• DNA
• either RNA or DNA

What part of the phage is the DNA?

• A
• B
• C
• D

The flu is caused by a

• bacteria
• virus

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

What is the main function of the surface proteins on the surface of a virus?

• They aid in respiration
• They help the virus grow
• attach virus to host receptor cells
• They help the virus digest food molecules

Which viral life cycle allows viral genetic material to lay dormant while the host cell reproduces?

• lytic
• mitosis
• lysogenic
• S phase