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What is the purpose of adding ampicillin to the NA agar medium?
Ampicillin is added to NA agar medium to inhibit the growth of bacteria that do not contain the ampicillin resistance gene. This ensures that only bacteria transformed with a plasmid containing the resistance gene will be able to grow on the agar, allowing for selection of transformed bacteria.
Did lactobacillus grow on mannitol salt agar?
Yes. M. smegmatis is a gram + bacteria, and MSA plates select for gram + bacteria.
Suppose you transform bacteria with a recombinant DNA plasmid and by mistake grow the transformed cells without an antibiotic . What result would you observe?
If you grow transformed bacteria containing a recombinant DNA plasmid without an antibiotic, you would likely observe that only a small proportion of the cells that successfully took up the plasmid will survive, while the majority of non-transformed cells will also grow. However, the transformed cells may not express the gene of interest or provide any selective advantage, resulting in no significant difference in growth compared to the non-transformed cells. Over time, the population would likely consist mostly of non-transformed cells, as they do not require any selective pressure to thrive.
Avery macleod and mccarty found transformed live rough strain bacteria to smooth strain cellds and therefore was genetic material?
A. Dna
Why its important to grow bacteria in lab?
Cultivation of bacteria is essential for the study of bacteria, usually in the development of vaccines for particular pathogens.
Most of the insulin manufactured today is produced by .?
transformed bacteria
Antibiotic in gene cloning?
If antibiotic resistance is added to the gene being cloned, antibiotics can be used to isolate the transformed bacteria (ones with the gene being cloned) by killing off all non-transformed bacteria, that don't have the antibiotic resistance. There is a chance that the non-transformed bacteria can mutate to develop antibiotic resistance.
How can bacteria be transformed with recombinant plasmid?
Bacteria can be transformed with recombinant plasmid by introducing the plasmid into the bacterial cell through a process called transformation. This allows the bacteria to take up the recombinant DNA from the plasmid and express the desired gene or trait encoded in the DNA.
Who Was responsible for the experiment with mice and bacteria that led to the hypothesis that when two bacteria were mixed together something was passed to the living cells?
This experiment was conducted by Frederick Griffith in 1928. He observed that when he mixed a harmless strain of bacteria with a heat-killed virulent strain, the harmless bacteria were transformed into a virulent form. This led to the hypothesis that something in the heat-killed bacteria had transformed the live bacteria.
What atmospheric gas can only be used by plants when transformed by bacteria first?
Nitrogen
What was 'transformed' in Griffith's experiment?
In Griffith's experiment, non-pathogenic bacteria were transformed into pathogenic bacteria by being exposed to heat-killed pathogenic bacteria, a process now known as transformation. This led to the discovery of genetic material transfer between bacteria.
Explain how the bacteria in griffith's experiment were transformed?
The harmless living bacteria took in pneumonia-causing DNA(genes) from the heat-killed, pneumonia-causing bacteria, as a result of which the harmless bacteria changed into bacteria that cause pneumonia.
What is the purpose of adding ampicillin to the NA agar medium?
Ampicillin is added to NA agar medium to inhibit the growth of bacteria that do not contain the ampicillin resistance gene. This ensures that only bacteria transformed with a plasmid containing the resistance gene will be able to grow on the agar, allowing for selection of transformed bacteria.
What is a blasticidin?
A blasticidin is any of a class of antibiotics used to select transformed cells in genetic engineering.
Which gas makes up 78 percent of our atmosphere but can be used by plants only when transformed by bacteria?
nitrogen-
Who Concluded that bacteria could be transformed from harmless to disease by an unknown factor?
In 1927, Fredric Griffith concluded that bacteria could be transformed from harmless to disease-causing by introducing a factor that was not yet identified. This changing factor was eventually discovered to be DNA, the basis for all biological reproduction.
Which gas makes up 78 percent of our atmosphere but can used by plants only when transformed by bacteria first?
nitrogen-
