·A virus is a nonliving particle that requires a host cell in order to reproduce. Viruses are made of a nucleic acid (DNA or RNA) enclosed in a protein shell or coat known as a CAPSID ·Viral infections include all colds and flu, most coughs, and most sore throats. Usually viruses involve several parts of the body. Also antibiotics cannot kill viruses ·The three types of viruses are bacteriophages, animal viruses, and retroviruses. A bacteriophage is a virus that specifically attacks bacteria and is almost like a needle and injects DNA into the cell · Viruses have three shapes; polyhedral, rod, and complex ·Viruses replicate through the lytic cycle which immediately makes more viruses and destroys the host cell. Also viruses have a sticky surface. Viruses may also lay dormant before reproducing · Vaccines are the only way to prevent viruses. A vaccine is full of dead or crippled virus cells · One example of a virus is HIV, or Human Immuno-deficiency Virus. HIV is a retrovirus and has single stranded RNA. ·A virus uses Reverse Transcriptase; makes DNA from RNA
·A virus is a nonliving particle that requires a host cell in order to reproduce. Viruses are made of a nucleic acid (DNA or RNA) enclosed in a protein shell or coat known as a CAPSID
· Viral infections include all colds and flu, most coughs, and most sore throats. Usually viruses involve several parts of the body. Also antibiotics cannot kill viruses
· The three types of viruses are bacteriophages, animal viruses, and retroviruses. A bacteriophage is a virus that specifically attacks bacteria and is almost like a needle and injects DNA into the cell
· Viruses have three shapes; polyhedral, rod, and complex
· Viruses replicate through the lytic cycle which immediately makes more viruses and destroys the host cell. Also viruses have a sticky surface. Viruses may also lay dormant before reproducing
· Vaccines are the only way to prevent viruses. A vaccine is full of dead or crippled virus cells
· One example of a virus is HIV, or Human Immuno-deficiency Virus. HIV is a retrovirus and has single stranded RNA.
· A virus uses Reverse Transcriptase; makes DNA from RNA
Bacteriophage Animation