can  you conclusion the genetic of bacteria tell me faster if you can pls i hope to help me faster thanx a lot
597566
The Hershey-Chase experiment was a series of experiments conducted in 1952 by Alfred Hershey and Martha Chase that identified DNA to be the genetic material of phages and, ultimately, of all organisms. A phage is a small virus that infects bacteria. It consists of a protein coat that encloses the genetic material. When a phage infects a bacterium, it inserts its genetic material into the bacterium, while its coat remains outside.\n\n \nStructural overview of T2 phageIn a first experiment, T2 phages with radioactive 32P-labeled DNA infected bacteria. In a second experiment, T2 phages with radioactive 35S-labeled protein infected bacteria. In both experiments, bacteria were separated from the phage coats by blending followed by centrifugation. In the first experiment, most radioactivity was found in the infected bacteria, while in the second experiment most radioactivity was found in the phage coat. These experiments demonstrated that DNA is the genetic material of phage and that protein does not transmit genetic information.\n\nHershey shared the 1969 Nobel Prize in Physiology or Medicine for his “discoveries concerning the genetic structure of viruses”\n\nis this wat u meAN?
921174
http://en.wikipedia.org/wiki/Cell_%28biology%29\n\ndoes this help any?
917922
Well, if you want to measure their growth in milk you need:\n\nPure culture of the bacteria in question, sterile milk, sterile glass tubes and a spectrophotometer.  This will measure the density of the bacteria in liquid culture.  I don't know what equipment you have access too (pipetts, tubes, a spectrophotometer etc).\n\nIf you've isolated the bacteria from milk and want to just measure their growth in "whatever", you can use any sterile growth medium that supports the growth of the isolated bacteria.  Again, measuring growth is most easily accomplished by use of a spectrophotometer.  \n\nGrowing bacteria on a plate to decide which grows faster is fairly insane, unless they have significant differences in growth.  I mean, are you going to stare at an agar plate for 24 hours just to see that at 14 hours 5 minutes a tiny pinpoint on plate A was visible, but it took 15 hours and 22 minutes for a colony of the same size on plate B?  No, of course you're not, it's not even plausible.\n\nWith liquid culture, you can take readings every hour for 8 hours and at 24 hours or something.\n\nYou can also dilute and spread-plate the bacteria from liquid cultures onto agar plates if you have your heart set on using them and achieving an exact count for bacterial populations.  But use of a spec still allows for comparisons between species, even without an exact population number.
214730
Yes, you can cause mutation by reduction/increasing of exposure time or increase/decrease distance of bacteria culture dish from UV source or by use of some filters to reduce UV wave power if it has more power.
337172
If you mean a round, whitish colony like you see in petri dishes, it's because they require moisture, salts, and nutrition to divide rapidly and maintain that kind of population.  You *will* find colonies of bacteria anywhere that those conditions apply, such as in the mouth, in decomposing animal and plant matter, in stagnant ponds, etc.  There are small, microscopic, colonies and single bacteria everywhere, waiting to exploit that situation.
224406
There are many different tests you could so on a culture to determine the type of bacteria. The main tests that you could do to find out a general idea of what Genus of bacteria you have would be things like a Gram stain, Catalase test, Oxidase test, O/F Fermenation test, growing the culture on different mediums, a motility test. Once you have done these tests there are then other tests which are more specific to one group of bacteria to give you an exact type of bacteria.
237003
Im a microbiologist working in a pathology lab.....its a bit slow at the moment - people are too healthy!
985275
Because they make up your bodys DNA\n\n\nA circular strand of DNA in bacteria that contains the hereditary information necessary for cell life.
725203
I can't remeber off the top of my head but there is a wonderful book out there called Bergey’s Manual of Determinative Bacteriology 9th Edition that should be able to answer this question for you.
1082860
Nope, natural selection/evolution leads to bacterial resistance to antibiotics. No antibiotic is perfect. If we wipe some out, there would still be some left.
86650
Boy, am I ever glad I'm done with high school biology where they ask ridiculous, ambiguous fill-in the blank questions like that.  I have a degree in biology and I couldn't give you a solid answer.  It will be a word that you should have been studying in class.\n\nIe.,  \nAdaptation - mutations that give an organism an advantage\nMutation - alterations in genetic makeup\nEvolution - changes in organisms over time due to adaptation\nNatural Selection - conditions which select adaptations\n\nI would go with adaptation, but no guarantees.  The concept here is that as we take antibiotics we kill a lot of bacteria, but not all of them.  The remaining few that survive are the "tougher" ones, at least ones that aren't affected as much by the antibiotics.  These remaining bacteria may continue to grow in numbers.  If they ever succeed in infecting more people, the antibiotics will now do nothing.\n\nP.S...  A lot of people think that bacteria randomly mutate until one of them becomes resistant.  This is only part of the story.  Antibiotics almost always originate from other bacteria, or some other organism trying to fend off bacteria.  These antibiotics are not new, just new to medicine.  Bacteria have been resisting these antibiotics for millions of years.  Maybe not actively, but somewhere in their past it has probably been encountered.  Yet another reason why a one-word answer just doesn't cut it.
767124
I think you mean why do the bacteria have a higher resistance.\n\nIt is called evolution in action.  The bacteria with low resistance die, the bacteria with higher resistance reproduce.
589663
To the best of my knowledge any Bacteria such as mentioned above can not survive in the air. They die very quickly once exposed to the environment.
912842
This question is not really answerable.  The E. coli chromosome is circular so it depends on how much time passes.  Also you need to know how many bases are in the chromosome.  ( 1 mega base?)   So hypothetically if an E.coli is able to replicate itself in 20 minutes at log phase growth and there is 2 replication complexes, in 20 minutes you would have approximately 4 million base pairs.
248511
Please take the time to\nvote for the best answer\n\nThank You!!\n\n\n\nCommonly known bacteria include such organisms as E-coli, Vibrio Colera, and Salmonella. They range in size from 0.2 to about 10 microns
430455
the bacteria is a prokaryotes they are single cell organisms there are millions of bacteria are found in earth they are ubikutes they are live in any where bacteria are classified into based on their temperature is as follows\n1)thermophiles(lived in more than 60 degree \n2)mesophiles (they are live in normal temp(35)drgee \nthe bacteria are mostly autotropics\neg(blue green algae )is photo synthesis pigment & gain energy in that \nreproduction\nby binarry fission\ntransduction\ntransformation
1067028
Try a rough DNA isolation, some things u need are detergent, lemons, and a sample like onion.\n\nSimple diffusion experiments with onions, salt, water, etc..