What is a virus?
Viruses are not living organisms and they are not plants,animal or bacteria .
Can viruses reproduce?
A virus needs a a host cell in order to carry out life functions or reproduce.
What is the outer layer of a virus called?
All viruses are made up of a protein coat called a capsid.
What is inside the capsid?
The capsid is made up of genetic material,either DNA or RNA.
What steps do you need to follow to have viruses multiply?
Virus attaches to a cell, penetrates and injects nucleic acids,replicates and packages and releases from the cell.
When active viruses multiply,what happens?
Active virus multiplies and destroys the host cell.
What is a latent virus?
A latent virus is dormant ( THERE BUT NOT ACTIVE) that enter the host cell and becomes part of the cell's genetic material in the host's DNA.
What is an example of a latent virus?
An example of an latent virus is a cold sore- a sore on your lip is a sign that the virus is active and destroying cells.It goes away when the virus is latent again.
What are vaccines?
Vaccines are used to prevent diseases caused by viruses.
How can viruses be stopped?
Viral infections are stopped by proteins called interferons.
What are interferons?
Interferons are produced by viral infected cells.The interferons move to healthy cells and produce a protective coat around them.
What do interferons do?
Interferons play an important role in the first line of defense against viral infections.They are part of the non-specific immune system and are induced at an early stage in viral infectiosn.
what is a bacteriophage?
They are viruses that parasitize bacteria
What is a lytic cycle of a bacteriophage?
The cycle that is the infectious cycle of the bacteriophage.
What is the lysogennic cycle of a bacteriophage?
It is the dormant or passive cycle in the bacteriophage.