Biology CP-Mr.Willets
Viruses- Pages 283-290
Pg 283- First section
1) A virus is either ________ or ________ encased in a ___________ coat called a ____________
2) In what ways are viruses not like cells - They have no _______________ , _______________,
_______________ or ______________ They do not reproduce using ____________ or _______________ nor can they carry out cellular _______________
They can reproduce by invading a _______________ and using that cell to make _________________
Pg 285-287 Classification
3) Viruses not classified using the standard taxonomic system because they are not _______________
4) The two basic types of viruses are __________viruses and __________viruses
Use the chart on the bottom of 284-285 to answer questions 7-9
5) Which kinds of DNA viruses might you have been infected with_______________________________
6) Which kinds of RNA viruses might you have been infected with?______________________________
7) What kind of virus is HIV? ________________
8) What enzyme do retroviruses have? _________________________
9) In normal cells, DNA makes __________ which then makes proteins. In retroviruses, RNA makes __________ (using the enzyme _______________________) The DNA then makes new ________ which make proteins that become part of the new __________.
10) What two disease causing particles are even simpler than viruses? ____________ and ___________
Page 288-289
11) What type of virus did scientists first study to learn about how viruses reproduce? __________________________. These viruses infect ____________________
12) The fundamental reproductive process of viruses is called the _______________ Cycle
13) The five phases of the lytic cycle are a) ______________________ the viruses attaches itself to the outside of the host cell. It attaches at a specific place called the _________________ site.
b) _____________________- the virus enters the host cell c) __________________ The virus takes control of the cell and makes new virus parts d) ___________________- the new virus parts are put together e) _____________ the new viruses leave the host cell. When they leave they break the cell apart- This is called _______________