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Experiments with erythrocyte "ghosts" were carried out to learn more about the glucose transporter in red blood cells. "Ghosts" are prepared by lysing red blood cells in a hypotonic medium and washing away the cytoplasmic contents. Suspension in an isotonic buffer allows the ghost membranes to reseal. If ghosts are prepared so that the enzyme trypsin is incorporated into the ghost interior, glucose transport does not occur. But glucose transport is not affected if trypsin is located in the extracellular ghost medium. What can you conclude about the glucose transporter, given these observations?
Develop a dilution scheme to show how you might prepare 250 mL of a solution of twenty mM NaCl from the stock solution.
Lane one (normal control) has a band at 4400 bp and lane two (cells from cheek) has bands at 4400 bp, 3300 bp, and 1400 bp.
In a small population of snapdragons experiencing incomplete dominance, 30 percent express the homozygous dominant phenotype of red flowers, 50 percent have the heterozygous phenotype
Assume you have a protein solution of concentration 3 M. You require to make a series of six dilutions of 300 mM, 30 mM, 3 mM, 300 mu M, 30 mu M, and 3 mu M.
Determine characteristics distinguish the animals and the animals are thought to be monophyletic. What is your explanation for it.
What is potentiation and how does it pose a threat to living organisms. what responsibility does carson believe scientists have to the public.
Discuss how compelling are the argruments for the monoclonality of tumor cell population and what logic and observation undermine the conclusion of monoclonality?
What is the yield of ATP when each of the following substrates is completely oxidized to CO2 by a mammalian cell homogenate.
If you were asked to create a karyotype from the chromosome spreads you made from HeLa cells in Activity 4.2.1, list materials you would use and explain how you would make the karyotype.
Compute the solute potential of a 0.1 M NaCl solution at 25 degrees. If the concentration of NaCl inside the plant cell is 0.15 M,
Estimate expected frequencies of each individual progeny possibility based on the 1.5 M.U. distance. Do this through showing a punnet square for frequencies.
Which pair will have been likely to agree that strata such as those depicted here were deposited gradually over long periods of time by subtle mechanisms that are still at work?
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