5.2 1-2 Flashcards
What IS a virus?
Tiny, nonliving particles that reproduce inside of living cells.
Viruses L or NL?
Viruses are not living organisms. They cannot be “killed”. They can be broken apart using chemicals.
Some viruses can also have a viral envelope. What is a viral envelope?
This is from the previous host cell plasma membrane. (It is an example of mimicry. It looks like a normal cell, but it is actually like a Trojan horse. The danger is inside.)
What are the varied shapes of viruses?
Some are round, some rod-shaped, and others like bricks, threads, or bullets.
What are Bacteriophages
Bacteriophages (A.K.A. Phages) are viruses that attack bacteria.
How are viruses named?
Named for disease the virus causes, or
Named for geographic location where discovered
Viruses are not organisms, so are not named using binomial nomenclature
What does epidemic mean?
Epidemic – Big outbreak in one area, like a state or country.
What does pandemic mean?
Pandemic – Global outbreak
What must viruses have in order to reproduce?
Viruses must have a host cell in order to reproduce.
Viruses are considered what?
They are considered cellular parasites – viruses live on or in a host and cause it harm.
Who Discovered Viruses and which one?
Wendell Stanley (1935) First person to isolate a virus. The virus was Tobacco Mosaic Virus - TMV
