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The Meselson-Stahl experiments were groundbreaking studies in molecular biology. Some of the clarity of the centrifugation results was due to the that the DNA was fragmented during handling (although the experimenters did not know it at the time). As quoted in Davis, Stahl said that pipetting DNA was like "throwing spaghetti over Niagara Falls." When DNA breaks into fragments, the sugar phosphate backbone is broken, forming many short double helixes. Why did the fragmented DNA still show the same pattern of nitrogen density banding?
Explain how glycolysis becomes critical to cellular ATP production during severe hypoxia. Your answer should mention the allosteric regulators that accelerate glycolysis.
Cleavage of DNA with restriction enzymes provides landmarks and sequence information. How frequently are specific sites found? How many sites are expected? Does this change if
DNA contains phosphate groups. You have: radioactive isotopes of phosphate (32P), skin cell cultures from various patients, the drug in question, and a device that measures ra
Was there any noticeable effect on the germination rate of the radish seeds as a result of the pH? Compare and contrast the growth rate for the control with the alkaline and a
A viral culture revealed the cause of his symptoms: a large, enveloped polyhedral virus with double-stranded DNA. What is the disease; Which virus caused it; Why was the vir
Calculate the generation time when an exponentially growing cell population increases from 5 x 10^6 cells/ml to 5 x 10^8 cells/ml in 8h. Calculate the number of cells/ml in
Identify the stakeholders and consider the situation from their point of view. For example, consider the point of view of the company's employees, top management, stockholde
How many of the E. Coli can fit across the diameter of a pin? Assume that the pin head is 2mm in diameter and the E. Coli is roughly 2 micrometers. Please provide an explanat
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