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Assume that the binding of one molecule of epinephrine to a seven-transmembrane helix (7TM) receptor (also called the G protein-coupled receptor, or GPCR) results in the activation of 270 G? subunits. In addition, suppose that each activated adenylyl cyclase catalyzes the conversion of 30 ATP molecules to cAMP per second. (Assume that each G protein activates a single unique adenylyl cyclase.) Calculate the number of moles of cAMP that are produced per second. Enter your answer to at least two significant figures
Chlorine can be generated by heating together magnesium hypochlorite and hydrochloric acid. Magnesium chloride and water are also formed.
An excited hydrogen atom emits a photon with a frequency of 1.141 x 10^14 Hz to reach the n = 4 state. From what state did the electron
What is the percent yield of CaO in the reaction CaCO3 yield CaO + CO2 if 5.33 g of CaO are obtained when 10.0 g of CaCO3 are used?
we had used a red dye, what changes would you make in your experimental procedure to determine the rate law for the oxidation of the red dye by sodium hypo-chloride?
2.58g of a gas has a volume of 3.97L at 745mmHg and 21 degrees celcius. What is the molecular weight of the gas?
It takes 45.0 to raise the temperature of an 8.00 piece of unknown metal from 13.0 to 24.5. What is the specific heat for the metal.
How many grams of methanol must be added to 7.50 kg of water to lower its freezing point to -13.0 degrees C? For each mole of solute, the freezing point of 1 kg of water is lowered 1.86 degrees Celsius.
Calculating percent purity from a reaction, One of the reactions that occurs in a blast furnace, where iron ore is converted to cast iron is Fe2O3 + CO = Fe + CO2.
A piece of Al(s) at 94°C is placed in 65g of H2O at 28°C. The Aluminum cools and after equilibrium the final temperature of Aluminum and water is 38°C. What was the mass of the aluminum?
Giving examples give the mechanisms of Aldol condensation between two molecules of aldehydes and two molecules of ketones
The combustion of alkanes, alkenes and alkynes produces, A. water and carbon. B. carbon dioxide and hydrogen. C. oxygen and hydrogen. D. hydrogen and water. E. carbon dioxide and water.
The use of the British thermal unit (Btu) is common in much enginerring work. (1Btu=1054J). A Btu is the amount of heat required to raise the temperature of 1Ib of water by 1 degree F. How many QUADS of energy does world energy consumption quantit..
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