At what pH range will histidine have a net neutral charge? a. O b. There are no pH values where histidine will have a net neutral charge. below 1.82 OC. between 1.82 and 6.0 O d. between 6.0 and 9.17 Oe. above 9.17 Clear my choice
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- 1. Find the pH of 0.1 M of the different form of histidine species. Please show solution for credits. NH₂ H OH H3His2+ → H₂His+ pka1 1.60 HHIS pKa2 = 5.97 His pKa3 = 9.28 2. What is the principal species at a) pH 1 b) pH 5 c) pH 8 and d) pH 11?3. Alanine is a diprotic amino acid. a. Make a ladder diagram for alanine. b. Draw the predominant species of alanine at pH-7.0. Draw the predominant species of alanine at pH-10.0. c.Chemistry What is the best estimate of pl of amino acid H? 1. pH=3.5 2. pH 6.0 3. pH 9.5 4. pH 7.5 4 3 2 1 No new data to save. Last checked at 9:56pm Submit Quiz
- 2. H2N CH-C OH CH2 a. polar/non-polar; b. Neutral/acidic/basic C. Also write whether the side chain is Hydrophobic/HydrophilicWhat is the net charge on the protein shown below (without pH considerations) at pH 12? a. -2 b. -1 c. +1 d. 0 e. +3 f. +2b. You have 100 mLs of a 2 M histidine solution at pH 6.0, how many ml.s of a 5 M KOH solution must be added to bring the pH to exactly 7.0? Report your answer to 1 decimal point - assume no change in volume
- What is the Kb of a base whose pKa is 8.9?There are two pH values in which Glutamic acid will have an a complete net charge of 2.17? what is the lowest PH1 and highest of pH2 round your amswers to the nearest 0.1 no orher information was provided20. An amino acid has an -OH side chain. What type of side chain could form hydrogen bonds with this side chain? a. -OH Ob. -SH Oc. -NH2 d. more than one choice is correct e. none of the above
- What charged groups are present in lysine at a pH = 7? OA) 1× NH3 B) 1 x COO™ OC) 1× NH3* and 1 x COO- D) 2× NH3 and 1 x COO- OE) 1× NH3+ and 2 x COO- OF) None7. Amino-Acids: a. Calculate the pl of each of the given amino acids 2.42 7.56 OH o HOT NH3* OH -2.11 4.73 10.34 9.85 -9.97 Compound A Compound B Compound C b. Sketch the major form of compound A from question 7A n a solution at the given pH pH 1 pH 5 thod osvand Valorizą od glasing not alongg +H₂N NH3* duastic OH pH 9 2.31 NH3* pH 121. Type of bond a. H-bond b. Electrostatic interaction c. Hydrophobic bond d. Disulfide bond e. Peptide bond 2. Level of protein structure a. primary b. secondary c. tertiary d. quaternary 3. Method/s of denaturation. choose all that applies a. Heating to 100 degrees Celsius b. Addition of nitric acid c. Reaching Isoelectric point d. Addition of mercuric chloride e. Addition of sulphosalicylic acid f. Addition of alcohol g. Addition of ammonium sulfate