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The protein insulin consists of two polypeptides termed the A and B chains. Insulins from different organisms have been isolated and sequenced. Human and duck insulins have the same amino acid sequence with the exceptions of six amino acid residues, as shown below. Is the pI of human insulin lower than or higher than that of duck insulin? Amino acid residue A8 A9 A10 B1 B2 B27 Human Thr Ser Ile Phe Val Thr Duck Glu Asn Pro Ala Ala Ser I don't understand how to find the pI of residues, since the reading says it can only be found experimentally. Should I just be comparing the pI for each free amino acid between ducks and humans? Please explain the answer instead of just giving the solution.
when 3.299 of iodine reacts with fluorine, 5.768g of IFx is formed. What is the value of x in product formula (IFx)?"
Determine the mass of carbon dioxide produced when .85 grams of butane reacts with oxygen according to the following equation : 2C4 H10 + 13O2 ->8CO2 + 10H2O
Consider the dissociation reaction given above taking place in a reaction vessel. This dissociation reaction starts with n0 moles of A2. At equilibrium we have nA moles of the product A. The pressure at equilibrium is P and the temperature is T.
Determine how many micrograms of herbicide are present in 10 lb of soil if the herbicide level in the soil in a corn field was observed at 3.0 ppb. ?
Consider the electron shell with principle quantum number n = 5. a.) How many subshells are there with n = 5?
What is the hydronium ion concentration and the pH of a solution formed when 30mL of 0.30M HNO3 is titrated with 43mL of 0.20M NaOH at 25C?
A scientist wants to make a solution of sodium phonsphate for a lab experiment. How many grams of sodium phosphate will be needed to produce 475 ml of solution that has a concentration of Na+ ions of 1.50 M?
Some bacteria are able to harvest 1000-nm light. What is the energy (in kilocalories or kilojoules) of a mole (also called an einstein) of 1000-nm photons?
What total mass of hydrogen is contained in 7.1 g of solution that is 51 % hydrogen peroxide
Rutherford result also showed that the most of the atom's mass is located in the nucleus which has a very small volume.
Calculate the amount of heat liberated (in kJ) from 325 g of mercury when it cools from 81.9°C to 10.0°C.
A japanese car is advertised as having a gas mileage of 15 km/L. Convert this rating to miles per gallon.
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