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An enzyme preparation from isolated beef liver mitochondria has the capacity to carry out all of the reactions of the tricarboxylic acid cycle when supplied with the essential precursors of acetylCoA, NAD+, FAD, GDP, and Pi2-.
Suppose that the acetyl-moiety of acetylCoA is labeled with the isotopes 13C in the methyl group and 14C in the carboxyl group. Thus,
O
ll
(carbon 13)H3- (carbon 14) - SCoA
Determine the radioactive labeling pattern in a-ketoglutarate after an infinite number of turns of the TCA cycle. Each turn of the cycle will bring a new labeled molecule of acetylCoA into the cycle. After an infinite number of turns of the cycle, a distinct pattern of label will be repeated in the molecule of a-ketoglutarate. What is the labeling pattern?
Given 6.4 mL of sulfuric acid (98%) calculate the number of mmols. (MW H2SO4: 98.08 g/mol, density: 1.840 g/mL)
If a non-cyclic alkane shows a molecular ion peak at m/z 2.4*10^2, what is the chemical formula
Calculate the degrees of unsaturation in a compound with the molecular formula C3H6 and draw two possible structures, including hydrogen atoms, for the formula.
For the following elements show the allocation of electrons to their orbitals on the basis of the Pauli exclusion principle, Hund's rule, and the Aufbau principle.
Nitrogen (N2) reacts with hydrogen to give ammonia (NH3): N2 + 3H2 -> 2NH3 If 30 g of N2 reacts with excess hydrogen, what the mass of ammonia formed would be?
when 5.0g of KOH is added to 100mL of water , the temperature of the solution increases by 3 degree Celsius . assume the density of the solution to be 1g/mL and specific heat capacity of the solution to be 4.184 J/g K.
You are told that K=3.76x10^-5 for I2(g)=2I(g) at 1000K. You begin an experiment by injecting 1.00 mole of I2 into a 2.00 liter box at 1000K. When the system comes to equilibrium, what will be the concentration of I2 and I in the system at equilib..
In a reaction of copper with nitric acid, if 4.00 g of copper is used, how much copper nitrate will be produced
A balloon filled with helium gas has a volume of 500 mL at pressure of 1 atm. The balloon is released and reaches an altitude of 6.5 km, where the pressure is 0.5 atm.
What is the pressure (in millimeters of mercury) inside a container of a gas connected to an open-end manometer filled with decane (density = 0.7300 g/cm3) when the level in the arm connected to the container is 765.3 mm in height higher than the ..
Sodium phosphate is added to a solution that contains 0.0014 M aluminum nitrate and 0.078 M calcium chloride. The concentration of the first ion to precipitate (either Al3+ or Ca2+) decreases as its precipitate forms
A solution contains 10.90g of unknown compound dissolved in 50.0mL of water. (Assume a density of 1.00 g/mL for water.) The freezing point of the solution is -6.53C. What is the molecular formula of the compound
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