Bacteria and other microbes can be used to "clean up" an oil spill by breaking down oil into carbon dioxide and water. Two samples isolated from the Deepwater Horizon leak in the Gulf of Mexico were labeled A and B. The DNA of each was isolated and the percent thymine measured in each sample. Sample A contains 17.7% thymine and sample B contains 29.1% thymine. Assume the organisms contain normal double-stranded DNA and predict the composition of the other bases. percent adenine in sample A: %A percent guanine in sample A: %G percent cytosine in sample A: %C percent adenine in sample B: %A percent guanine in sample B: %G percent cytosine in sample B: %C Both samples are then denatured to remove the secondary structure. Which will have the higher temperature to denature? B A
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7% - Percent adenine in sample A = 17.7% - Percent guanine in sample A = (100 - 17.7 - 17.7) / 2 = 32.3% - Percent cytosine in sample A = 32.3% Show more…
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Bacteria and other microbes can be used to "clean up" an oil spill by breaking down oil into carbon dioxide and water. Two samples isolated from the Deepwater Horizon leak in the Gulf of Mexico were labeled A and B. The DNA of each was isolated and the percent thymine measured in each sample. Sample A contains 22.7 % thymine and sample B contains 29.1 % thymine. Assume the organisms contain normal double‑stranded DNA and predict the composition of the other bases. percent adenine in sample A: %A percent guanine in sample A: %G percent cytosine in sample A: %C percent adenine in sample B: %A percent guanine in sample B: %G percent cytosine in sample B: %C Both samples are then denatured to remove the secondary structure. Which will have the higher temperature to denature? A or B?
Jenny W.
Bacteria and other microbes can be used to "clean up" an oil spill by breaking down oil into carbon dioxide and water. Two samples isolated from the Deepwater Horizon leak in the Gulf of Mexico were labeled A and B. The DNA of each was isolated and the percent thymine measured in each sample. Sample A contains 18.3% thymine and sample B contains 30.9% thymine. Assume the organisms contain normal double-stranded DNA and predict the composition of the other bases. percent adenine in sample A: _____%A percent guanine in sample A: _____%G percent cytosine in sample A: _____%C percent adenine in sample B: _____%A percent guanine in sample B: _____%G percent cytosine in sample B: _____%C Both samples are then denatured to remove the secondary structure. Which will have the higher temperature to denature? A B
Joanna Q.
The illustration below is a graph called a $\mathrm{C}_{0}$ t curve (pronounced "cot"). The $y$ -axis shows the percentage of DNA that is double stranded. The $x$ -axis is the product of the concentration of DNA and the time required for the double-stranded molecules to form. Explain why the mixture of poly(A) and poly(U) and the three DNAs shown vary in the $\mathrm{C}_{0} \mathrm{t}$ value required to completely anneal. MS2 and T4 are bacterial viruses (bacteriophages) with genome sizes of 3569 and $168,903 \mathrm{bp},$ respectively. The $E .$ coli genome is $4.6 \times 10^{6} \mathrm{bp}$ (GRAPH CAN'T COPY)
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