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When using the Nernst equation to calculate membrane potential, we are making several assumptions about conditions in the cell. Which of the following is not a good assumption?
a. The temperature is 37 degrees C.b. The plasma membrane is primarily permeable to Na+.At rest, the interior of the cell is more negatively charged than the exterior.d. K+ is the principal positive ion in the cell.
Explain the mechanism of horizontal gene transfer during transduction. Describe a disease in which transduction plays a role and explain what it does
There is a stable pH and electrical potential difference across the mitochondrial membrane in actively respiring cells. The pH of the cytoplasm is 6.8, the pH of the mitochondrial matrix.
The reactions of glycolysis are catalyzed by enzymes and obviously proceed without much problem. However, when we look at some of the individual steps, they have positive standard free energies. What are these steps and how does the process preven..
Do any of your suspect samples appear to have EcoRI or Pstl recognition sites at the same location as the DNA from the crime scene? If so which suspects and what are the band lengths (bp) that match?
Draw the tripeptide His Glu Ala, with charges, at pH 5. Recognize the C-terminus, the N-terminus, a peptide bond.
Complete the table by writing down the genotype of the parents or parents involved in each cross. Utilize the letter P for purple and p for white. What are the genotypes of the parent plants.
Suppose a wild-type male fruit fly is treated with X-rays. It is then crossed to an ordinary wild female carrying no known mutant alleles.
Eastern tent caterpillars live in sizable groups in silk nests, or tents, which they construct in cherry trees. They are among the first insects to become active in the spring, emerging very early in the season-a time while daily temperature fluctuat..
Consider the three major classes of biologically important molecules: proteins, lipids, and nucleic acids. Which steps of the miniprep procedure act on proteins?
On the other hand, vascular plants became dominant during the invasion of what type of habitat? What structures allowed them to infiltrate this new environment.
While Mexican hairless dogs are crossed with normally haired dogs, about half the pups are hairless and half have hair. While, though, two Mexican hairless dogs are mated, about a third of the pups produced hair, about two thirds are hairless and som..
A major difficulty in investigating the properties of pancreatic serine proteases is that these enzymes, being proteins, are self digesting. The problem is less severe for solutions of chymotrypsinthan than for solutions of elastase or trypsin.giv..
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