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The lock and key model of enzyme activity proposes that each
A) Enzyme can react with only a single substrateB) Enzyme has a cofactor that promotes the catalytic activityC) Substrate has a specific cofactor that binds it to the enzymeD) Enzyme binds a specific substrate because the active site and substrate have complementary structures.E) Both A and B are correct
A gaseous sample of this element is bombarded by photons of various energies (in these same units). Match each photon to the result of its absorption (or lack thereof) by an n=1 electron.
An imagnary element Xz conists of two isotopes having massess of 100.00 amu and 102.0 amu. A sample of Xz was found to contain 75.0% of the 100xz isotope and 25.0% of the 102xz. Calculate the atomic weight of Xz
what is the calculated value of partial pressure of o2 in acid mine water of ph 2 in which fe2+=fe3+.
Calculate the heat given off by the burning Mg in kJ/g. b)Calculate the heat given off by burning Mg in kJ/mol
What is the overall charge state for the tetrapeptide DREAM at physiological pH. The pK values for N-terminal, C-terminal, side chain of asp, arg, glu
the solubility of oxygen in water at 25 degree celsius and 1.00 atm pressure is 0.041g/L. what is the solubility of oxygen in water at 6 atm pressure?
produces an alcohol isomeric to one obtained by hydroboration-oxidation of the same alkene. Reduction of the alkene affords the compound C5H12, while ozonolysis yields an aldehyde, CH3CHO, as one of the products. Deduce the structure of the alkene..
What is the new molarity of a solution when 650mL of water are added to 500.0mL of a 3.2 molar solution?
A 97 gram solution of silver nitrate contains 10 grams of AgNO3. What is the percent by mass of silver nitrate in this solution. Answer in units of %
A layer of iron(III) oxide forms on the nail, increasing the nail's mass. How much oxygen has reacted with the iron if the mass of the nail has increased to 5.89 g?
container at a temperature of 47C exerts a pressure of 6.3 atm. Calculate the number of moles in the sample
Plan and Design Lab: To Determine the water of crystallization of a hydrated salt XY•nH2O and to determine the value of n in the formula XY•nH2O with a relative formula mass of 392.14.
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