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You inject identical (subthreshold) rectangular current pulses into axons of two different neurons, one of which is shown in the upper illustration. The injection site is near position “a” for each cell and the resulting voltages are recorded at position a, b, and c, separated by 100 microns each. The […]

Each of the following statements describes a type of column chromatography. Sort the statements to the type of chromatography they describe. If a statement can describe all of the types, place that statement in the “All” category. (Note that size-exclusion chromatography may also be called gel-filtration or molecular exclusion chromatography.) Categories: Size-exclusion Chromatography, […]

The conversion of molecule S to productP has a Keq = 0.75. Two different, but relatedenzymes, A and B, can catalyzethe reaction. The product P serves as anallosteric inhibitor of enzyme B, but not ofenzyme A. A. 10 mMS is placed into three separate test tubes (Tubes 1, 2,and 3) […]

Q1. In a continuous culture of a bacterium running at D=0.345 hr-1 glucose is the limiting substrate with a residual concentration of 0.01 g/l. The yield coefficient based on glucose is 0.5 g cell/g glucose. What will occur if the feed glucose is increased by 0.5 g/l while the dilution […]