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Question: You make buffer solution by adding 4 gram sodium bicarbonate to 270 milliliters of water then titrate this solution to 30 ml of 0.1 molar HCl
Question: What is the equilibrium equation for this base/acid pair?
Question: What is the molarity of this buffered solution?
Question: What is the pH of this buffered solution?
With respect to the case-control studies compare the usefulness of the hospital and neighbourhood (community) controls. Your comparison must involve a comparison of the cost, feasibility, co-operation of the controls, recall bias, selection of contro..
Dialysis patients, who will have blood withdrawn, dialyzed, then replaced, are always weighed while they enter the facility and then weighed carefully before they leave. What is the most probable explanation for this requirement.
The bacteria are allowed to grow overnight and are streaked on a plate using a technique that produces isolated colonies that are clones of the original. Samples of these colonies are then grown in four different media: nutrient broth plus ampicillin..
A sunflower population in Hardy-Weinberg equilibrium has the given allele frequencies for petal color: 0.75 dominant, 0.25 recessive.
In the figure below, suppose the left-hand individual is selfed. What pattern of radioactive bands would you see in a Southern analysis of the progeny?
Both the endocrine and nervous system are main regulating systems of the body though the nervous system has been compared to an airmail delivery system and the endocrine system to the pony express. Briefly explain the comparison.
What is the cellular tropism of HIV and does it change during the course of an infection? Which cellular receptors confer the preference for infection of certain cell-types?
The peroxisome gets its name from its interaction with hydrogen peroxide. If the liver cell is detoxifying alcohol and some other poisons, it does so by removal of hydrogen from the molecules. What, after that, do the enzymes of peroxisome do.
Assume that a daughter of a mother without the allele and a father with the allele marries a man with hemophilia. What is the possibility that the daughter's children will develop the disease? Describe how to determined the probability.
Explain how this could be considered a negative feedback mechanism. The amino acid residues at the active site are highly hydrophobic. In designing a drug that would bind to the active site and jam it, researchers must use which type of molecule.
A botanist takes a sample of 300 plants from a population and determines the genotype of each one for an esterase locus. The locus has two alleles segregating in the population
A friend has just returned from a trans-Atlantic jet aircraft flight and reported that the plane dropped about1000 m when it entered an "air pocket." Explain to a friend what apparently happened to cause this drop.
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