19-2 Viruses p. 478-483

3. what is the difference between a bacteriophage and a prophage?

-bacteriophage: virus that infects bacteria -prophage is the viral DNA that is embedded in the host cell's DNA

2. describe the two ways that viruses causes infection

-in a lytic infection, a virus enters cell, makes copies of itself, and causes the cell to burst -in a lysogenic infection, a virus integrates its DNA into the DNA of the host cell, and the viral genetic information replicates along with the host cell's DNA

1. what are the parts of a virus?

a typical virus is composed of a core DNA or RNA surrounded by a protein coat

capsid

outer protein coat of a virus

Virus

particle made up of nucleic acid, protein, and in some cases lipids that can replicate only by infecting living cells

lysogenic infection

process by which a virus embeds its DNA into the DNA of the host cell and is replicated along with the host cell's DNA

lytic infection

process in which a virus enters a cell, makes a copy of itself, and causes the cell to burst

prophage

the viral DNA that is embedded in the host cell's DNA

4. what is retrovirus?

virus that contains RNA as its genetic infomation

retrovirus

virus that contains RNA as its genetic information

bacteriophage

virus that infects bacteria