Chapter 20.1 Virus

Viruses are...

• prokaryotic
• eukaryotic
• non-living
• endospores

Reasons that viruses are considered to be nonliving is because

• They are not cellular
• They cannot reproduce on their own
• They  cannot obtain and use energy
• all of the above

What do viruses need to reproduce?

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

What happens in the lysogenic cycle? 

• A virus injects DNA into a host cell
• Bacteria injects genetic material into a host cell
• A virus injects nucleic acid into the host  cell's DNA
• Bacteria injects DNA into a host cell

Viruses are cells. 

• True 
• False

What process is this?

• phagocytosis
• lytic cycle
• lysogenic cycle
• formation of antibodies

What is shown here?

• Lysogenic Cycle
• Lytic Cycle
• Binary Fission
• Conjugation

A tiny non-living particle that invades and then multiplies inside of a living cell is called a:

• vaccine
• virus
• bacteriophage

Cell in which a virus reproduces

• endospore
• host cell
• bacteriophage
• plasmid

A virus can multiply only when it is inside a living _____.

• bacteria
• cell
• ribosome
• nucleus