1. What is the equation that describes Ro for this model?

3. Consider the molecule dopamine (shown). Given that its pKa(NH3¹) = 10.9. a. What pH range would dopamine be a good buffer at? b. Draw the structures of the predominant species in solution at (i) pH 7, (ii) pH 10, and (iii) pH 12. c. At what pH range do you expect dopamine to be most water soluble? d. At what pH do you expect dopamine to be most hexane soluble? НО. HO + NH3 pka = 10.9

7. [10'] For a bacteriophage 77, the following data at zero concentration have been obtained: Sedimentation coefficient: $20,w = 453 S. Diffusion coefficient: D₂0. = 6.03×10-8 cm² s¹¹. 20,w Specific volume V20 = 0.639 cm³ g¹ Calculate the molecular mass M of the bacteriophage.

3. Consider a hypothetical chemical reaction: WKNO3 → xK + yN2 +zO2. (a) Write a system of 3 equations in the 4 variables w, x, y, z that represents the reaction. (b) Explain why the only solution is w = x = y = z = 0. That is, the reaction is impossible for mathematical reasons.

5. Anesthetic gases used in surgery are known to bind to the hemoglobin molecule in red blood cells. The diagram below illustrates O2 binding curves of normal human HbA in the presence of the anesthetic gas dichloromethane (DCM). O UNTREATED 100 a Dсм 23 Torr Symbols: в Dсм 50 Torr x DCM I00 Torr o, 0 Torr DCM; O, 23 Torr DCM A, 50 Torr DCM x, 100 Torr DCM. 80 60 40 (1 Torr = 1 mm Hg.) 20 The solutions were buffered to pH 7.4. 0.5 1.0 1.5 2.0 log p02 (a) (* Hill plots. Label the axes and indicate on both the plot above and the Hill plot where the value of the dissociation equilibrium constant Ka for O2 binding is defined for 0 and 100 Torr of dichloromethane For the curves at 0 and 100 Torr of dichloromethane, draw their equivalent in the form of Kd Hb(O2)n Hb + nO2 % OXYGENATION

How would I create a bar graph using the Hardy -Weinberg Equation data ?

) In the thin layer chromatography of practical 5 the chromatography tank contained a mixture of n-butanol:acetic acid:water (2:1:1) as the developing solvent. i) predict what would happen to the migration of the sugars if you would use butane:acetic acid:water (10:1:1) as the developing solvent; and ii) provide a rationale for your prediction that takes into account the principle of TLC separation, and the chemical properties of the sugars. The chemical spot tests for carbohydrates and reducing sugars on thesesamples as outlined below: 1.Glucose2. Sucrose3. Fructose4. Unknown5. Lactose6. Galactose7. Maltose8. Honey9. Ripe banana10. Starch11. Distilled water (control)

22. For the process, A B, Keq is 0.02 at 37°C. For the process, BC, Keq 1000 at 37°C. A. Determine Keq (AC), the equilibrium constant for the overall process A C, from Keq (AB) and Keq (BC). B. Determine standard-state free energy changes for all three processes and use AG'(AC) to determine Keq (AC). Make sure that this value agrees with that determined in part A of this problem.

5.Myasthenia (muscle weakness)is characterized by damage in the transmission of neurotic impuise and decreased amount of acetylcholine due to autoimmune mechanisms. Prozerine is used for treatment of this disease.Specify the mechanism of this drug action. For this: 1)Write the reaction of acetylcholine degradation at neuromuscular junction. 2)What enzyme will be inhibited with prozerine? Name the class of this enzyme. 3)What is the mechanism of this enzyme inhibition?

1. Start with the Michaelis-Menten equation and convert it to a double-reciprocal equation. Show how you would make a linear Lineweaver-Burk plot using this equation. 2. Based on th chart make a Lineweaver-Burk plot and later use the plot to complete the information in the table.