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How we work with Bacteria. Replica plating and what it shows Bacteria is transferred to two different media. The one that doesnt grow is the Auxotroph.

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Presentation on theme: "How we work with Bacteria. Replica plating and what it shows Bacteria is transferred to two different media. The one that doesnt grow is the Auxotroph."— Presentation transcript:

1 How we work with Bacteria

2 Replica plating and what it shows Bacteria is transferred to two different media. The one that doesnt grow is the Auxotroph (has special needs) Can use this to understand what certain bacteria needs

3 Bacteria evolution or resistance An agar plate is streaked with an unknown bacteria The colony of bacteria grows They put the bacteria on a plate with penicillin The resistant bacteria is streaked and allowed to grow and placed on a plate with Erythromycin. Now we know there is a colony of bacteria resistant to penicillin and Erythromycin

4 What happened? The bacteria became resistant to the antibiotic because a mutation happened. Those bacteria that previously were resistant to the antibiotic and changed have said to have evolved. This is a big problem with so much antibiotic soap. Bacteria is become resistant and new strains are being produced that cant be killed.

5 They now have figured out the DNA for E. Coli. Why? Now they can integrate other genes inside of the E.colis genes and they know what enzymes are made. The gene for Human growth hormone and Insulin is integrated into E.coli. E.Coli synthesizes so much faster than we ever could.

6 Lets talk about septic tanks Bacteria is a decomposer in our world that means it breaks things down. If it werent for bacteria there would be too much garbage around. A septic tank does the same thing that a waste treatment plant does; bacteria in your gut will help break down all the waste.

7 Things I learned Bacteria have to be still (as in stagnate water in lakes) in order to carry on their processes, so if the tank is stirred or disrupted- bacteria can be killed Antibiotics and chemotherapy medications will kill bacteria and mess up your septic system Fats, oils and grease are difficult for bacteria in septic tanks to get rid of. (There are bacteria that do break down oils but usually are not found in the septic tank)

8 Root Nodulation There is N 2 in the atmosphere Plants need the nitrogen to grow Bacteria in the soil will change the nitrogen gas to a soluble form that plants can use. This is called nitrogen fixation. People plant clover and soy beans to mix into the soil- those plants will fix nitrogen better than others.


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