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understand the cause of infection

About microscopic forms of life, including Bacteria, Archea, protozoans, algae and fungi. Topics relating to viruses, viroids and prions also belong here.

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understand the cause of infection

Postby tracey9 » Sun Jun 26, 2011 5:24 pm

hi all i hope some body can help me pleases , i need to identify the differences between bacteria,viruses,fungi and parasites.
i all need to identify common illness and infections caused by bacteria,viruses,fungi and parasties i would be very gratefull if someone could help me thank you :D
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Postby Genotype » Fri Jul 01, 2011 8:45 am

Okay, here's a dumbed down version for you,

Bacteria - unicellular organisms which produce toxins as they grow and divide

Virus - protien shells packed with genetic information - which are considerably smaller than a cell. It can't reproduce outside the cell unlike bacteria, so they invade the cells and inject the genes into the nucleus and creates copies of itself

Fungi - causes disease by absorbing nutrients, and producing toxins

By the way, what do you mean by parasites? Pathogenic bacteria, and fungi are all parasitic in nature, if I'm not wrong.
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Postby JackBean » Fri Jul 01, 2011 9:12 am

Genotype: I would guess it's something like nematodes or tapeworms. On the other hand, for sure are not all bacteria and fungi pathogenic!Think about bacteria in your gut and Bifidus actiregularis :lol: :lol:
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.
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Postby florinka » Fri Jul 01, 2011 9:25 am

Parasite is an organism that lives inside (endo-) or outside (ectoparasite) some other organism and this relationship is good for the parasite and bad for the host. The difference between a predator and a parasite is that the parasites' host usually doesn't die. So I guess it can be any kind of organism - plant, animal, bacteria... :-).
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Postby JackBean » Fri Jul 01, 2011 11:05 am

yes, of course, but in the context of tracey's question, I would suggest the multicellular organisms
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.
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Re:

Postby Genotype » Fri Jul 01, 2011 6:37 pm

JackBean wrote:Genotype: I would guess it's something like nematodes or tapeworms. On the other hand, for sure are not all bacteria and fungi pathogenic!Think about bacteria in your gut and Bifidus actiregularis :lol: :lol:


Where did I say that? I said most of the pathogenic bacteria/fungi are parasitic in nature :roll:
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Postby tracey9 » Wed Jul 06, 2011 12:40 pm

thank you all you are so nice and i am gratefull that really helped me .
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