Create an account
What are the two parts of a virus?
Nucleic acid core surrounded by protein coat (capsid); contains DNA and RNA
Why is a virus not considered a living organism?
Lack of nucleus and membrane- bound oragnisms, requires no nutrients and is completely dependent on another organisms for survival. They can only reproduce with the help of a cell
What is a bacteriophage?
Looks like a robot; viruses that only infect bacteria cells. Protein coat on outside and genetic info on inside
What is tobbacco mosaic virus
Virus that affected tobbacco plants in the 30s and the first virus we ever identified. Wendell Stanley
What is vaccinne? how does it work?
Substances that contain parts of anitgens from an infectious organism. By stimulating an immune response, they protect the body against subsequent infection of that organism, its like a killed version of the virus
What are some differences between Archae and other bacteria?
Archeae lives in more extereme enviornments where there is not a lot of oxygen
Archeae live in extreme conditions. give examples
Thermopheils- very hot condidtions, halophiles- very salty, Methagens- not oxygen
difference between gram postiive and gram negative?
Gram positie holds the purple howver the negatative's purple cmes right off
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together