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The Michaelson-Menten mechanism for enzyme catalyzed reactions,
E+S <==(-> rate k1 & <- rate k2)==> E*S complex --(k3)-> E+P
gives rise to the following equation relating the velocity of reaction (V or d[P]/dt) to the substrate concentration [S]:
V=k3[E(total)]{[S]/(Km+[S])} where Km=(k2+k3)/k1
(a) Use the equation as the basis for an overview of mechanisms of regulation of biochemical function.
(b) Use this equation to discuss how subcellular localization of biochemical function is acheived.
A 4.369 g sample of metal is placed in a flask. Water is added to the flask and the total volume in the flask is read to be 126.4 ml. The mass of the water
Once the liquid has solidified, the system is in thermal equilibrium (no temperature change in the solid). What is the latent heat of fusion (kJ/kg) of the unknown liquid?
Consider the following standard reduction potentials in acid solution: Cr3+ + 3e- ? Cr Eo = -0.74 V, Co2 + 2e- ? Co Eo = -0.28 V, MnO4 + 8H+ + 5e- ? Mn2+ + 4H2 Eo = +1.51 V
If the weight of the gas in the bulb is 0.3554 g, what is the mole percent of butane in the mixture. Set up two equations to solve simultaneously for the two unknowns, the moles of ethane and butane.
an aqueous solution of a nonelectrolyte boils at 100.32c. what is its expected freezing
In a second experiment, a 1.217 g sample of a compound with the formula C6H14O(l) was burned in the same calorimeter. The temperature increased by 10.08 oC. Use these data, plus the information given below for CO2 and H2O, to estimate the standard..
Calculate the concentrations of all species in a 0.750 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
which is an aqueous solution of acetic acid, HC2H3O2 , requires 24.5 mL of 0.450 M NaOH to reach the endpoint in a titration. What is the molarity of the acetic acid solution
A sealed balloon is filled with 2.20 L helium at 23°C and 1.00 atm. The balloon rises to a point in the atmosphere where the pressure is 190. torr and the temperature is -35°C
A beaker with 165 mL of an acetic acid buffer with a pH of 5.000 is sitting on a bench. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 7.00 mL of a 0.390 M HCl solution to the beaker. How much will the pH c..
A sample of an unknown gas effuses in 11.9 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.19 min. What is the molar mass of the unknown gas
estimate the ratio of their conductivities at room temperature
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