If bacteria do not have organelles such as the nucleus, how is it they can still perform the functions of life?

Since this is not my area of expertise, I searched Google under the key words "bacteria nucleus" to get these possible sources:

http://encarta.msn.com/encyclopedia_761574409_1____2/bacteria.html#s2
http://www.pubmedcentral.nih.gov/pagerender.fcgi?artid=373156&pageindex=1

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.

I hope this helps. Thanks for asking.