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Presume that the binding of one molecule of epinephrine to a seven-transmembrane helix (7TM) receptor (as well called the G protein-coupled receptor, or GPCR) results in the activation of 440 G? subunits. In addition, presume that each activated adenylyl cyclase catalyzes the conversion of 20 ATP molecules to cAMP per second. Presume that each G protein activates a single unique adenylyl cyclase. Compute the number of moles of cAMP that are produced per second.
Why is it important to not dilute an initial sample before it hasbeen loaded
A 5.00-mL sample of filtered orange juice was treated with 50.00mL of excess 0.01023 M I2. After the oxidation was complete 13.82mL of 0.07203 M Na2S2O3 was required to reach the starch indicator end point. Report the concentration of ascorbic aci..
assume standard biological conditions and that all the enzymes are present to catalyze the reactions . the following are sequential enzyme reactions in a pathway
how do you calculate the density of metals? could this method be used for determining the density of mercury as well?
when 0.050 mol of propionic acid c2h5co2h is dissolved in 300 ml of water the equilibrium concentration of h3o ions is
Calculate the maximum volume in mL of .15M HCl that each of the following anti-acid formulations would be expected to neutralize. Assume complete neutraliation.
what if any experimental evidence do you have that the equilibrium is affected by change in temperature. Briefly explain. Are your observation and explanation in (3) consistent with Le Chatelier's principle. Briefly explain.
For a hypothetical gas-phase reaction that is second order in A and third order in B, by what factor does the rate change if pA is decreased by 4 times and pB is doubled
The reported values for one compound (CaHbOc) were as follows: mass: 214.1360 g/mol; percent C and H: 84.07 and 8.47, respectively. Determine the molecular formula of the compound.
1. calculate the freezing point and the boiling point of a solution prepared by dissolving 5.0 g of kclin 550 g of
Sucrose (C12H22O11, table sugar) is oxidized in the body by O2 via a complex set of reactions that ultimately produces CO2(g) and H2O(g) and releases 5.64 x 103 kJ/mol sucrose. What is q (heat change) per gram of sucrose oxidized
The density of germanium is 5.325 g/cm3. If you made a 5.3-nm diameter quantum dot of germanium, how many Ge atoms would it contain? Assume the dot is spherical.
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