Biochemistry
9th Edition
ISBN: 9781305961135
Author: Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher: Cengage Learning
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Textbook Question
Chapter 3, Problem 22RE
REFECT AND APPLY In each of the following two groups of amino acids, which amino acid would be the easiest to distinguish from the other two amino acids in the group, based on a titration?
(a) gly, leu, lys
(b) glu, asp, ser
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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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- REFECT AND APPLY Suggest a reason (or reasons) why amino ac- ids polymerize to form proteins that have comparatively few covalent crosslinks in the polypeptide chain.arrow_forwardRECALL Describe citrulline and ornithine based on their similarity to one of the 20 standard amino acids.arrow_forwardREFLECT AND APPLY Starting with a Fischer projection of D-fructose, write equations showing the formation of -D-fructopyranose, -D-fructofuranose, -D-fructopyranose, and -D-fructofuranose.arrow_forward
- REFECT AND APPLY You are studying with a friend who draws the structure of alanine at pH 7. It has a carboxyl group (COOH) and an amino group (NH2). What suggestions would you make?arrow_forwardREFECT AND APPLY Would the peptide group be planar if the amino group of amino acids was bonded to the carbon of the amino acid, rather than to the a carbon?arrow_forwardRECALL What is the name of the process by which amino acids are linked together in the correct order based on an RNA sequence?arrow_forward
- REFECT AND APPLY Most proteins contain more than 100 amino acid residues. If you decided to synthesize a 100-mer, with 20 different amino acids available for each position, how many different molecules could you make?arrow_forwardREFECT AND APPLY Would the presence of a chiral center in an amino acid side chain affect the formation of a peptide bond?arrow_forwardRECALL For each of the following, name an amino acid in which the R group contains it: a hydroxyl group, a sulfur atom, a second chiral carbon atom, an amino group, an amide group, an acid group, an aromatic ring, and a branched side chain.arrow_forward
- REFECT AND APPLY What might you infer (or know) about the stability of amino acids, when compared with that of other building- block units of biopolymers (sugars, nucleotides, fatty acids, etc.)?arrow_forwardRECALL What is the basic purpose of tRNA?arrow_forwardREFECT AND APPLY If you were to have a mythical amino acid based on glutamic acid, but one in which the hydrogen that is attached to the -carbon were replaced by another amino group, what would be the predominant form of this amino acid at pH 4, 7, and 10, if the pKa value were 10 for the unique amino group?arrow_forward
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