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The effect was that Alexander Fleming discovered penicillin the blue-green moss that coveredthe moss was called penicillium potatum.
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What is the film of cells at the surface of a broth called?
When bacteria are grown in broths such as trypticase soy broth (TSB), they may exhibit patterns of growth ranging from a sediment at the bottom of the tube, turbid growth throughout the tube, or a pellicle (thick growth at the top of the tube).
How does thioglycollate work?
Thioglycollate broth is an enriched medium used to determine the oxygen requirements of microorganisms. The diffusion of oxygen from the top of the broth provides a range of concentrations.
How was spontaneous generation disproved twice?
Fransesco Redi: took 3 jars of rotten meat and the 1st was uncovered the second was covered with gauze and the 3rd was sealed with thick parchment. Results: 1. jar number 1 was infested with flies and maggots 2. jar number 2 had fly's eggs laid on top of the gauze 3. jar number 3 attracted no flies because it was sealed off and the flies could not smell it; this disrpoved the theory that flies evolved from rotten meat but in reality only hatched their eggs inside the meat so the maggots (baby flies) could have something to eat after they hatched. Louis Pasteur: broiled broth and set the broth inside flasks; some were covered and some weren't; the ones uncovered were infested with bacteria and the ones that were covered were not infested with bacteria. Then, he took a flasks with broiled broth inside the flasks and toom them to a mountain top. The results ended as he thought. The bacteria inside the broth was few because of the thin air. the final experiment was with broth uncovered inside a flask that had a zig-zag motion. Results: the bacteria did not infest the broth but settled on the curves of the flask and could not reach the broth. Without these two scientists (which lived about 200 years ago) the thought of spontaneous generation would have carried on through today; it still did with the stupidity of "so called" evoulutionists which call themselves scientists even thought evoulution is only a faith instead of a science or fact.
How did Louis Pasteur disprove the spontaneous generation theory?
Louis broiled broth for 15 min. He then let it sit for one year in a swan neck flask. He noticed that some dust had accumulated in the top part of the flask. So he took a sample, form the broth inside the flask. He noticed that nothing was inside of growing in it. So he then preceded to shake the broth in the flask in such a way, that it would touch the dust at the top. He then took a sample from that and it was highly bacteria ridden.
What is the difference between nutrient broth and nutrient agar and can you elaborate more?
When 2%agar is added to nutrient broth ,it is called nutrient agar.Nutrition Broth is liquid media containing beef extract and peptone.Nutrition Agar is solid media containing beef extract, peptone, and agar
How could you tell the bacteria were growing in the culture?
Bacteria growing on a petri dish can have more than one bacteria growing on it, but different characteristics can be seen like cilia, motility and color. To know more specifically what those other bacteria strains are, get a sample and grow it on agar by itself.
The advantages and disadvantages of a broth tube culture compared to a culture on a Petri plate?
If you grow your bacteria in a broth tube you can view the oxygen requirements of the bacteria (close to the bottom, anaerobe: close to the top, aerobe)
I am growing bacteria and there's this white fuzzy stuff on top of it. Is that bacteria too or is it something else?
It is bacteria! >:-D
Why does E-coli grow in nutrient broth better than in thio-glycolate broth?
The purpose of the thio-glycolate broth, which, if memory serves, is a semi-solid agar, is to determine oxygen requirements. E. coli is a facultative anaerobe which means it prefers aerobic conditions but can grow (to a lesser extent) anaerobically. So you will see growth at the top of the thio-glycolate tube mainly where there is oxygen, perhaps some just along the shallow stab line from inoculation. It will not permeate throughout the medium since it prefers aerobic respiration and oxygen is available at the top.
What is the film of cells at the surface of a broth called?
When bacteria are grown in broths such as trypticase soy broth (TSB), they may exhibit patterns of growth ranging from a sediment at the bottom of the tube, turbid growth throughout the tube, or a pellicle (thick growth at the top of the tube).
How do you collect and analyze bacteria?
you can catch bacteria by not coughing and sneezing into a hankie.
In Selenite broth why subculture from the top of the broth after incubation?
because it is more motile than other coliforms and can be isolated from the surface if present
Are brothes soup?
yes a broth is a type of soup.like Top Ramon, for example the watery part is broth but they still call it soup.i like broth and soup but i only like one thing.
How many layers should a euro top mattress have?
chicken broth:)
How does thioglycollate work?
Thioglycollate broth is an enriched medium used to determine the oxygen requirements of microorganisms. The diffusion of oxygen from the top of the broth provides a range of concentrations.
How do you make moist cornbread?
You can make your cornbread dressing more moist by adding more broth to the recipe. When you pour the dressing into the baking pan, if you have a little broth standing on top, it should turn out moist. Another way is, when you add the broth to the dressing mixture, stir it well, and let it sit for a little while to allow the cornbread to absorb the moisture. Then add more broth. I have also checked the dressing during baking, and if it seems to be getting dry, I drizzle broth over the top and put it back in the oven. The broth you add will absorb into the dressing.
How was spontaneous generation disproved twice?
Fransesco Redi: took 3 jars of rotten meat and the 1st was uncovered the second was covered with gauze and the 3rd was sealed with thick parchment. Results: 1. jar number 1 was infested with flies and maggots 2. jar number 2 had fly's eggs laid on top of the gauze 3. jar number 3 attracted no flies because it was sealed off and the flies could not smell it; this disrpoved the theory that flies evolved from rotten meat but in reality only hatched their eggs inside the meat so the maggots (baby flies) could have something to eat after they hatched. Louis Pasteur: broiled broth and set the broth inside flasks; some were covered and some weren't; the ones uncovered were infested with bacteria and the ones that were covered were not infested with bacteria. Then, he took a flasks with broiled broth inside the flasks and toom them to a mountain top. The results ended as he thought. The bacteria inside the broth was few because of the thin air. the final experiment was with broth uncovered inside a flask that had a zig-zag motion. Results: the bacteria did not infest the broth but settled on the curves of the flask and could not reach the broth. Without these two scientists (which lived about 200 years ago) the thought of spontaneous generation would have carried on through today; it still did with the stupidity of "so called" evoulutionists which call themselves scientists even thought evoulution is only a faith instead of a science or fact.
