Could an organism be both MR and VP positive? Please explain?
922797
only if they are both drunk
67893
Well, not to sure about your question... so I'll do my best.\n\nPositive interactions between microbes would be ones that cause a general benefit.  Like a bacteria excreting a certain amino acid that another bacteria would need in order to survive.\n\nNegative interaction would be microbes causing a detriment to each other.  Pencillium notatum generates an antibiotic naturally, causing a harmful environment to some bacteria.\n\nSymbiosis is two organisms living together in harmony.  If you refference Margulis's endosymbiont hypothesis, a large microbe, say an amoeba engulfs a photosynthetic bacteria.  The amoeba provides a safe location for the bacteria, and the bacteria provides energy to the amoeba.\n\nAntagonism... not to sure about this one.  Probably something of a parasitic interaction.
554798
I think you mean Frederick Griffiths.  He took two strains of _Streptococcus pneumoniae_.  One was deadly, one wasn't.  He found that if he killed the deadly cells, then mixed them with the harmless cells, the harmless ones would become deadly.  This indicated that the stuff that made the deadly strain deadly was not alive and could be transferred to another cell (i.e., it was chemical in nature).  We now know that the stuff he theorized is DNA.
615648
both are different species belonging to same genus
544411
Bacteria do not reproduce sexually in the way that animals do, so there are no "male" and "female" designations.  The closest you would get is F+ and F-, where the fertility plasmid is present or not.  But back to your question, the flagella is in a similar location in all of a species of bacteria.
716028
This article has a mechanism (APPLIED AND ENVIRONMENTAL MICROBIOLOGY, Dec. 1995, p. 4374–4377), but you may not can see the link provided (try the second).
695108
First you have to make out your alleles.  Your first parent PpLl will produce spermatozoids that can be either PL Pl pL pl.  As for the mother, she is also heterozygotous for both traits, so she is also PpLl and will produce eggs that are either PL Pl pL or pl.  The you make the Punnett square with all those four colomns and four rows.  You should get something like\n___|_PL__|_Pl_|_pL_|_pl__\nPL_|_PPLL|_PPLl_|_PpLL_|_PpLl_\nPl_|PPLl|_PPll_|_PpLl_|_Ppll_\npL_|PpLL_|_PpLl_|_ppLL_|_ppLl_\npl_|PpLl_|_Ppll_|_ppLl_|_ppll_\n\nOKAY NOW...\nPPLL means healthy all the way\nppll means has all the diseases\nIn between they are heterozygotous for one or both disease.\n\nSince you have 16 possibilities, then yes your 1/16 answer is correct for the probabilities of having both diseases\n\ncan you do the square for your second problem :-)
693283
I don't know off the top of my head, but try looking here. It has loads of good and useful virology info.\nhttp://www-micro.msb.le.ac.uk/
292071
What class was this in? What grade level? What text were you using?  I may be able to help you if I know the context in which the question was raised. I have a feeling that I am not getting all the information you had. Please tell me and maybe I can help. I am an old chemist and microbiologist.
873271
It's actually a misconception that there are 2 Rh factors, one positive and one negative.  It's not true.  You either have it or you don't, but you can't have a negative one.
607530
Uhhh.... isn't bacteria a single-cell organism?\nPlease be more specific.
181853
If you are culturing someone who is sick - say someone who has pneumonia - then chances are the colonies that are all alike and have the greatest number on the plate are the ones causing the problem.  You run biochemical tests on them and determine if they are known pathogens.  Stuff gets complicated when you have someone with a bad immune system and the bacteria that are normally good are actually the bad ones.
577147
This article answers your question.\n\nhttp://www.hhmi.org/cgi-bin/askascientist/highlight.pl?kw=&file=answers%2Fgeneral%2Fans_043.html
295926
I think one is the division of chromosomes and that is just a guess as for the other I assume that it has something to do with two sexes becoming one.
1112363
To help elaborate in monkey terms for your reading pleasure , let me explain what these nerds just said.  Once upon a time, Mr cell and Mr. Mito (mitochondria) lived away from each other.  They both had DNA to make more of themselves, but something was wrong  Mr. Cell was having a tough time getting energy and felt weak and miserable because he wanted to grow and divide and be a super cell.  At the same time, Mr. Mito was cold and lonely and needed a place to live where he was safe and where he felt needed and important.  One day Mr Cell accidentally ate Mr mito thinking he was something else.  Mr Mito was angry, but soon came to realize that life was easier inside Mr. Cell because he was protected and could make all the energy he wanted.  Mr. Cell was so happy because he could now use the energy from Mr. Mito to grow strong and become the super cell of his dreams and out live all of the other cell.  They were both happy now and agreed to stay together forever--and they evolved happily ever after.  We will read about Mr.Ribosome and his misfit RNA issues another night.
868323
So funny thanks, have to tell my biology teacher that one, actually on second thoughts perhaps not the type of thing you tell your teacher. Thanks anyway xXx
826685
You might try posting this question in the general biology area, it seems to get a bit more traffic than over here. Good luck.