Viruses

This video shows how HIV enters the cell and copies itself using reverse transcriptase.
 * 1) Viruses[[image:http://media.pearsoncmg.com/bc/bc_campbell_concepts_5/media/art/ch10/Content/Source_Files/10_18aInfluenzaVirus_L.jpg width="309" height="360" align="right" caption="Image 10.18A - An influenza virus"]]
 * 2) What is a virus?
 * 3) A virus is a nonliving particle that requires a host cell in order to reproduce
 * 4) What are viruses composed of?
 * 5) Nucleic Acids
 * 6) DNA
 * 7) RNA
 * 8) Protein shell or coat known as a __capsid__
 * 9) Types of Viruses
 * 10) Bacteriophage
 * 11) Infect Bacteria
 * 12) Animal Virus
 * 13) Intect Animals
 * 14) Retrovirus
 * 15) Use the host cell to make DNA from RNA (known as reversetranscription)
 * 16) Shapes of Viruses
 * 17) Polyhedral
 * 18) Example: Flu
 * 19) Rod[[image:http://media.pearsoncmg.com/bc/bc_campbell_concepts_5/media/art/ch10/Content/Source_Files/10_18bEnvelopVirusLifeCyc_L.jpg width="294" height="479" align="right" caption="Image 10.18B - The reproductive cycle of an enveloped virus"]]
 * 20) "Complex"
 * 21) Replication of Viruses
 * 22) Lytic Cycle (Virus Cycle)
 * 23) Attachment
 * 24) Entry
 * 25) Replication
 * 26) Assembly
 * 27) Release
 * 28) Some viruses lay dormant before reproducing
 * 29) Viruses have sitcky surfaces in order to get into host cells
 * 30) Viruses generally reproduce until the host cell is destroy or until it explodes from too many viruses
 * 31) Prevention of Viruses
 * 32) Vacines are the only help against viruses
 * 33) Vaccines are only for prevention and do nothing if the body already has the virus
 * 34) Vaccines are used to teach the body how to identify and defeat viruses
 * 35) A vaccine is a dose of something that contains a dead or weakened pathogen
 * 36) Edward Jenner
 * 37) The creator of vaccines
 * 38) He tested on his own baby son with the virus cowpox to prevent small pox
 * 39) Antibiotics - WILL NOT KILL VIRUSES because viruses are ambiguously alive
 * 40) Not alive
 * 41) Cannot reproduce on their own
 * 42) Need a host cell to reproduce
 * 43) Seem Alive
 * 44) Have DNA or RNA
 * 45) They kill their host
 * 46) Examples of Viruses
 * 47) Retrovirus
 * 48) Single strand of RNA
 * 49) HIV - Human Immuno-Deficiency Virus (NOT AIDS)
 * 50) You must have the HIV virus in order to get AIDS
 * 51) AIDS - Aquired Immune Defficiency Syndrome (NOT HIV)
 * 52) Use the enzyme Reverse Transcriptase (an enzyme to make DNA from RNA)
 * 53) Viral Infections include
 * 54) all colds and flu
 * 55) Most coughs
 * 56) Most sore throats
 * 57) Miscilaneous
 * 58) All viruses have some type of projection to get into host cell
 * 59) Viruses may have... (only can have one and only one form of genetic material)
 * 60) Double-Stranded DNA
 * 61) Double-Standed RNA
 * 62) Single-Stranded DNA
 * 63) Single-Stranded RNA
 * 64) Viruses tend to affect the entire body
 * 65) They do this because they travel through the blood streammedia type="youtube" key="9leO28ydyfU" height="344" width="425"

Here are the five stages of the Lytic Cycle: