Questions about bacteria and viruses?

1. Bacteria play a very important part in the biosphere. Basically, we could not live with out them. Anyone know three ways bacteria are helpful to humans.





2. Anyone know two ways bacteria and viruses are alike and two ways they are different.

Questions about bacteria and viruses?
1) Bacteria help fix nitrogen. Google the nitrogen cycle to further understand about it. They also aide in digestion of semi used organic compounds that our body otherwise would not be able to use, this bacteria are known as Gut Flora. Bacteria help curve off human population. Its a horrible way to look at it, but without Bacteria our numbers would be much larger.





2) Bacteria and Viruses are both covered in some sort of membrane. Bacteria and Viruses both contain RNA or DNA. (For Bacteria it's both).





Differences: Bacteria can be autotrophs, meaning they can make their own energy from sunlight, chemotrophs, meaning they get their energy from inorganic chemicals, or heterotrophs, meaning they get their energy from the breakdown of organic compounds. Viruses, however, are obligated parasites, they require a host to sustain themselves.





Bacteria Chromosomes are much larger than Viral chromosomes. And Viruses (Phage) are usually smaller than their prey bacteria.





Also, to the person that said there is no good virus, you obviously don't like breathing. Every 20th breath you take is thanks to a cyanophage.





Hope this helps.
Reply:google it... bacteria are good to humans this way: they are in our body (intestines) they are "good bacteria" google it or go to webmd.com
Reply:1. digestion, vitaminK production, decomposition of dead things, salt rising bread, saurkraut,


getting nitrogen out of the air for plants , then for us,





2.
Reply:1. a. Decomposition


b. they allow for digestion


c. allow for cheese to be made!!!





2. Bacteria can be killed, viruses cannot. There is a cure for a bacterial disease (Chlamydia), there is no cure for a viral disease (AIDS). And some types of bacteria are helpful and vital to humans. No virus is good.