Biochemistry
9th Edition
ISBN: 9781305961135
Author: Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher: Cengage Learning
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Chapter 3, Problem 11RE
MATHEMATICAL Sketch a titration curve for the amino acid cysteine, and indicate the
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61. MATHEMATICAL For the following aspartase reaction (see Ques-
tion 28) in the presence of the inhibitor hydroxymethylaspar-
tate, determine K and whether the inhibition is competitive or
noncompetitive.
[S]
(molarity)
V, No Inhibitor
(arbitrary units)
V, Inhibitor Present
(same arbitrary units)
:21×10¹01 0.026 TOIV 0.0109 9
5 X 10
0.092
0.040
0.086
0.120
10-3
IPO?
2.5 10-³
5×10 211 0.150 09M
ein
5 X 10-3
0.165
20 mys
0.142
Chapter 3 Solutions
Biochemistry
Ch. 3 - RECALL How do D-amino acids differ from L-amino...Ch. 3 - RECALL Which amino acid is technically not an...Ch. 3 - RECALL For each of the following, name an amino...Ch. 3 - RECALL Identify the polar amino acids, the...Ch. 3 - RECALL Identify the nonpolar amino acids and the...Ch. 3 - RECALL Are amino acids other than the usual 20...Ch. 3 - MATHEMATICAL Predict the predominant ionized forms...Ch. 3 - MATHEMATICAL Draw structures of the following...Ch. 3 - MATHEMATICAL Predict the predominant forms of the...Ch. 3 - MATHEMATICAL Calculate the isoelectric point of...
Ch. 3 - MATHEMATICAL Sketch a titration curve for the...Ch. 3 - MATHEMATICAL Sketch a titration curve for the...Ch. 3 - MATHEMATICAL An organic chemist is generally happy...Ch. 3 - MATHEMATICAL Sketch a titration curve for aspartic...Ch. 3 - REFECT AND APPLY Suggest a reason why amino acids...Ch. 3 - REFECT AND APPLY Write equations to show the ionic...Ch. 3 - REFECT AND APPLY Based on the information in Table...Ch. 3 - REFECT AND APPLY If you were to have a mythical...Ch. 3 - REFECT AND APPLY What would be the pI for the...Ch. 3 - REFECT AND APPLY Identify the charged groups in...Ch. 3 - REFECT AND APPLY Consider the following peptides:...Ch. 3 - REFECT AND APPLY In each of the following two...Ch. 3 - REFECT AND APPLY Could the amino acid glycine...Ch. 3 - RECALL Sketch resonance structures for the peptide...Ch. 3 - RECALL How do the resonance structures of the...Ch. 3 - REFECT AND APPLY Would the peptide group be planar...Ch. 3 - Prob. 27RECh. 3 - REFECT AND APPLY Consider the peptides...Ch. 3 - REFECT AND APPLY Would you expect the titration...Ch. 3 - REFECT AND APPLY What are the sequences of all the...Ch. 3 - REFECT AND APPLY Answer Question 30 using...Ch. 3 - REFECT AND APPLY Most proteins contain more than...Ch. 3 - REFECT AND APPLY If the amino acids alanine and...Ch. 3 - Prob. 34RECh. 3 - REFECT AND APPLY Would the presence of a chiral...Ch. 3 - REFECT AND APPLY What might you infer (or know)...Ch. 3 - Prob. 37RECh. 3 - REFECT AND APPLY Suggest a reason why the amino...Ch. 3 - REFECT AND APPLY Consider the peptides...Ch. 3 - Prob. 40RECh. 3 - Prob. 41RECh. 3 - REFECT AND APPLY You are studying with a friend...Ch. 3 - Prob. 43RECh. 3 - REFECT AND APPLY Suggest a reason (or reasons) why...Ch. 3 - Prob. 45RECh. 3 - REFECT AND APPLY Speculate on the properties of...Ch. 3 - RECALL What are the structural differences between...Ch. 3 - RECALL How do the peptide hormones oxytocin and...Ch. 3 - RECALL What is the role of the disulfide bond in...Ch. 3 - RECALL Is it possible to form cyclic peptides...Ch. 3 - Prob. 51RECh. 3 - RECALL What types of experiments led to evidence...Ch. 3 - Prob. 53RECh. 3 - THOUGHT QUESTION Imagine we identify a gene that...
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- MATHEMATICAL Predict the predominant ionized forms of the following amino acids at pH 7: glutamic acid, leucine, threonine, histidine, and arginine.arrow_forwardMATHEMATICAL Sketch a titration curve for the amino acid lysine, and indicate the pKa values for all titratable groups. Also indicate the pH at which the amino acid has no net charge.arrow_forwardREFLECT AND APPLY Comment on the energetics of protein folding in light of the information in this chapter.arrow_forward
- MATHEMATICAL What is the ratio of concentrations of acetate ion and undissociated acetic acid in a solution that has a pH of 5.12?arrow_forwardMATHEMATICAL Draw structures of the following amino acids, indicating the charged form that exists at pH 4: histidine, asparagine, tryptophan, proline, and tyrosine.arrow_forwardREFLECTANDAPPLY Suppose that you are studying a protein involved in transporting ions in and out of cells. Would you expect to find the nonpolar residues in the interior or the exterior? Why? Would you expect to find the polar residues in the interior or the exterior? Why?arrow_forward
- REFLECT AND APPLY A researcher claims to have discovered a variant form of glycogen. The variation is that it has very few branches (every 50 glucose residues or so) and that the branches are only three residues long. Is it likely that this discovery will be confirmed by later work?arrow_forwardREFLECT AND APPLY Both RNA and DNA have negatively charged phosphate groups as part of their structure. Would you expect ions that bind to nucleic acids to be positively or negatively charged? Why?arrow_forwardREFLECT AND APPLY The structures of tRNAs contain several unusual bases in addition to the typical four. Suggest a function for the unusual bases.arrow_forward
- MATHEMATICAL Determine the values of KM and Vmax for the decarboxylation of a -keto acid given the following data. substrateconcentration(molL1)Velocity(mMmin1)2.5001.0000.7140.5260.2500.5880.5000.4170.3700.256arrow_forwardMATHEMATICAL Sketch a titration curve for aspartic acid, and indicate the pKa values of all titratable groups. Also indicate the pH range in which the conjugate acid-base pair +1 Asp and 0 Asp will act as a buffer.arrow_forwardREFLECT AND APPLY The process of protein folding is spontaneous in the thermodynamic sense. It gives rise to a highly ordered conformation that has a lower entropy than the unfolded protein. How can this be?arrow_forward
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