Fill in the blanks: In the given reaction below, the amino acid HN NH₂ OH N. HN- undergoes NH₂2 reaction.
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- Question 10 Observe this structure, use the pK, table, and choose the CORRECT statement. H2N-CH-C-OH CH2 OH O Tyrosine's side chain is involved in hydrogen bonding typical of secondary structures O Tyrosine's alpha carboxyl group is the most acid of the three dissociable groups O Tyrosine's side chain is partially dissociated at physiological pH O All of these are correctQuestion 8 of 26 Suppose a drug molecule binds to a protein target. Complete the table which describes possible noncovalent interactio (NCI) in the binding site. Assume the drug has a variety of types of polar and nonpolar regions. Type of NCI ionic interaction dipole-dipole Species able to form that NCI any species with permanent dipoles (C=O, etc.) H bonded to N, O, or F and a lone pair on N.O.or F Answer Bank dielectric size; type of charge ions; charged species hp dispersion Parameters affecting the NCI hydrogen bond strength and orientation of dipole orientation polarizability; size; molecular weightQuestion 5 of 40 Side-by-Side Identify the charge states for aspartic acid (Asp), leucine (Leu) and Lysine (Lys) at pH 1, 7 and 12. Then calculate the isoelectric point (pI). Step 7: Determine the appropriate calculation for the pl of lysine. For lysine, the pKa of the amine is 8.95, while the pKa of the carboxylic acid is 2.18 and the pK, of the amine in the Strategy: First identify the sidechain on each amino acid. Then determine whether the side chain is acidic, basic or side chain is 10.53. neutral. Determine whether each functional group is Calculate the pI of lysine. charged or not at the pH indicated. Calculate the (pI) from the pKa values of the functional groups. pI MacBook Pro
- Question 11 Observe the titration curve below and choose the CORRECT statement. 12 - pK2 10 8- PK, 2. 0.5 1.0 1.5 Equivalents of OHO 2.0 O Two of these are correct O At point A, both acidic groups are protonated O At point A, both acidic groups are deprotonated O Cis the end point of titration for the most acidic group O B is the end point of titration for the most acidic group « Previous N. LG rotein d (basic)Rgoup Jacidic) Rgroup ged RgroupQUESTION 26 Which of these reagents is commonly used to determine the number of polypeptides in a protein? dansyl chloride 2-mercaptoethanol (B-ME) DEAE cyanogen bromide iodoacetate O O O OQuestion 43 Which of the following compounds would be classified as carbohydrates? CH 20H CH,OH c=0 C=0 C=0 Но — С —Н H-C-OH CH2 H C-OH CH 2OH CH2OH CH,OH A C O B O A O C O none of these O two of these O All of these
- QUESTION 35 Calculate the reaction rate of catalase at room temperature using the following data. Depth of Hydrogen Peroxide Solution Time = 66.3 seconds 2.2 cm O 3.000 68.50 0.080 O 30.140 O 0.033Question 42 The structure below HO, urs O contains trans double bonds O represents an unsaturated fatty acid O does not pack very easily O two of these are correct O three of these are correct O contains cis double bonds O packs easilyQuestion 51 The direct sequence of amino acids as dictated by DNA is the O quaternary primary secondary O tertiary structure of a protein.
- QUESTION 33 Bonus: An a-D-aldopentofuranose has how many chiral carbonsQUESTION 6 If a drug is built to bind to the active site of the enzyme, it will prevent substrate binding. This drug would be classified as a(n) allosteric activator. O allosteric inhibitor. noncompetitive inhibitor. competitive inhibitor.Question 14 Select all of the following that will slow down enzyme activity but not denature the enzyme. adding significant amounts of acid or base lowering temperature heating to high temperatures noncompetitive inhibition competitive inhibition increasing the concentration of substrate