Bio Viruses DNA Summative Assessment (Test 6) Mr. Benedict

NOT REQUIRED READING https://www.scientificamerican.com/article/are-viruses-alive-2004/
Name ________________                                                                                        

Biology Test


How do viruses reproduce?
they divide by mitosis
sexually, by external fertilization
replication outside the host
inserting DNA into the host cell

Vaccines can be used to prevent viral infection by:
creating an immune response in the host
destroying any viruses that enter the host
creating a blocking protein on the cell
preventing replication of the virus

Why do some viruses seem to go away and then return later, like a cold sore?
host has been infected with a different strain
the immune system forgot the virus
the virus had entered the lysogenic cycle
the virus mutated

What happens after the virus has been taken up by the cell?
it begins making protein
it divides
it inserts into the host DNA
it switches to infectious mode

Can a virus be classified according to Linneius’s classification system?explain your answer.

 Viruses are considered to be living or non- living? Explain why ?

What do viruses need to reproduce?

What happens in the lytic cycle ?

What happens in the lysogenic cycle?

Retroviruses are different from viruses in that?

Describe what viruses are made up of?

Explain how viruses have a parasite/host relationship?