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When an enzyme is purified from a complex mixture of proteins what usually happens to the total amount of protein and the specific activity during the purification process? A. The total amount protein decreases and the specific activity increases. B. The total amount of protein and the specific activity both decrease. C. The total amount of protein increases and the specific activity decreases. D. The total amount of protein and the specific activity both increase. E. No change.
An electrophilic addition is? Answer . a) An addition to an alkene initiated by a nucleophilic attack. b) An addition to an alkene initiated by an electrophilic attack
In the first step of the trypsin mechanism, the side-chain oxygen of Ser 195 attacks the carbonyl carbon of the substrate. Use PyMOL and your model of the enzyme substrate complex to determine the distance between these two atoms.
If 4.00 g of the unknown compound contained 0.133 mol of C and 0.267 mol of H, how many moles of oxygen, O, were in the sample?
A human body contains 6 liters of blood. The hemoglobin content of blood is about 15.5g/100 mL of blood. The approximate hemoglobin molecular weight is 64,500g/mol. How many moles of hemoglobin are present in a typical adult
A sample of gas has an initial volume of 13.4 L at a pressure of 1.27 atm. If the sample is compressed to a volume of 10.2 L, what will its pressure be
What is the pH change of a 0.200M solution of citric acid (pKa=4.77) if citrate is added to a concentration of 0.175M with no change in volume?
What is the pressure of a gas if you compressed the gas from it's original 500mL at 3.4 torr to a volume of 302mL?
What volume in liters of 0.94 M KOH solution should be added to a 0.090 L solution containing 9.1 g of glutamic acid hydrochloride
How can one confirm the identity of a peak in a chromatogram. How does one choose a solvent in HPLC
Important information about Galvanic cell, Consider a galvanic cell consisting of Sn wire immersed in a solution containing 10^-10 M Sn(NO3)subscript 2 and 1 M HNO3 and Ag wire immersed in 10^-2 M AgNO3 and 1 M HNO3.
If the barometric pressure on a mountain top in colorado is 521 mm of mercury what is the pressure in inches of hg. in atmospheres. in Pascals
A sample of Br2(g) takes 34.0 min to effuse through a membrane. How long would it take the same number of moles of Ar(g) to effuse through the same membrane
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