EBK ORGANIC AND BIOLOGICAL CHEMISTRY
7th Edition
ISBN: 9780100547742
Author: STOKER
Publisher: YUZU
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Textbook Question
Chapter 9, Problem 9.53EP
When two cysteine molecules dimerize, what happens to the R groups present?
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Consider the "C NMR spectrum below.
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The spectrum belongs to which one of the following constitutional isomers of the compound C,H12? Select the single best answer.
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The structure of compound 1,3,5-trimethylbenzene (mesitylene) is given below.
How many signals would you expect to find in the 'H NMR spectrum of 1,3,5-trimethylbenzene (mesitylene)?
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1
How many signals do you expect in the 'H NMR spectrum for this molecule?
CI CI
Cl
Write the answer in the table below.
Also, in each of the drawing areas below is a copy of the molecule, with H atoms shown. In each copy, one of the H atoms is highlighted red. Highlight in red all
other H atoms that would contribute to the same signal as the H already highlighted red.
Note for advanced students: Remember, a multiplet is considered one signal in the 'H NMR spectrum.
1
Number of signals in the 'H NMR spectrum.
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For the molecule in the top drawing area, highlight in red any other H atoms that will contribute to the same
signal as the H atom already highlighted red.
If no other H atoms will contribute, check the box at right.
No additional H atoms to highlight in
top molecule
For the molecule in the bottom drawing area, highlight in red any other H atoms that will contribute to the
same signal as the H atom already highlighted red.
If no other H atoms will contribute, check the box at…
Chapter 9 Solutions
EBK ORGANIC AND BIOLOGICAL CHEMISTRY
Ch. 9.1 - Prob. 1QQCh. 9.1 - Proteins are naturally occurring unbranched...Ch. 9.2 - Prob. 1QQCh. 9.2 - How do the various standard amino acids differ...Ch. 9.2 - The number of carboxyl groups and amino groups...Ch. 9.2 - How many different subclassifications are there...Ch. 9.2 - Which of the following statements concerning...Ch. 9.3 - Prob. 1QQCh. 9.3 - Proteins from plant sources are a. always complete...Ch. 9.3 - Incomplete dietary proteins contain inadequate...
Ch. 9.4 - Which of the following statements concerning the...Ch. 9.4 - Prob. 2QQCh. 9.4 - Which of the following statements concerning...Ch. 9.5 - Which of the standard amino acids exist as...Ch. 9.5 - Which of the following is the zwitterion ion...Ch. 9.5 - Which of the following is the structural form for...Ch. 9.6 - Cysteine is unique among standard amino acids in...Ch. 9.6 - Prob. 2QQCh. 9.7 - The joining together of two amino acids to form a...Ch. 9.7 - Prob. 2QQCh. 9.7 - Which of the following statements concerning the...Ch. 9.7 - What functional group is present in the bond...Ch. 9.7 - How many isomeric tripeptides can be formed from...Ch. 9.8 - The two best-known peptide hormones present in the...Ch. 9.8 - Which of the following peptides is an important...Ch. 9.9 - The term protein is generally reserved for...Ch. 9.9 - The presence of which of the following is a...Ch. 9.9 - Which of the following is not a distinguishing...Ch. 9.10 - Prob. 1QQCh. 9.10 - Prob. 2QQCh. 9.10 - Two different proteins that contain the same...Ch. 9.11 - Prob. 1QQCh. 9.11 - Prob. 2QQCh. 9.11 - Which of the following statements concerning the ...Ch. 9.12 - Interactions between amino acid R groups are...Ch. 9.12 - Prob. 2QQCh. 9.12 - R group interactions between which of the...Ch. 9.13 - Prob. 1QQCh. 9.13 - Prob. 2QQCh. 9.14 - The complete hydrolysis of a protein produces a...Ch. 9.14 - Which of the following statements concerning...Ch. 9.15 - Which of the following levels of protein structure...Ch. 9.15 - Which of the following does not involve protein...Ch. 9.15 - Which of the following is not a denaturing agent...Ch. 9.16 - Which of the following statements concerning...Ch. 9.16 - Prob. 2QQCh. 9.16 - Prob. 3QQCh. 9.16 - In which of the following pairs of proteins are...Ch. 9.17 - Insulin and human growth hormone are examples of...Ch. 9.17 - Myoglobin and transferrin are examples of a....Ch. 9.17 - Prob. 3QQCh. 9.18 - Prob. 1QQCh. 9.18 - Which of the following statements concerning basic...Ch. 9.18 - Which of the following statements about antibodies...Ch. 9.19 - Prob. 1QQCh. 9.19 - Prob. 2QQCh. 9.19 - In which of the following pairs of plasma...Ch. 9 - Prob. 9.1EPCh. 9 - What element is always present in proteins that is...Ch. 9 - What percent of a cells overall mass is accounted...Ch. 9 - Prob. 9.4EPCh. 9 - What is signified when an amino acid is designated...Ch. 9 - Prob. 9.6EPCh. 9 - Prob. 9.7EPCh. 9 - Indicate whether or not each of the following...Ch. 9 - Prob. 9.9EPCh. 9 - How many carbon atoms are present in the R group...Ch. 9 - Prob. 9.11EPCh. 9 - Prob. 9.12EPCh. 9 - Prob. 9.13EPCh. 9 - Prob. 9.14EPCh. 9 - Prob. 9.15EPCh. 9 - Prob. 9.16EPCh. 9 - Prob. 9.17EPCh. 9 - Prob. 9.18EPCh. 9 - Prob. 9.19EPCh. 9 - Prob. 9.20EPCh. 9 - Prob. 9.21EPCh. 9 - Prob. 9.22EPCh. 9 - In what way is the structure of the amino acid...Ch. 9 - Which two of the standard amino acids are...Ch. 9 - Prob. 9.25EPCh. 9 - Prob. 9.26EPCh. 9 - Indicate whether or not each of the following...Ch. 9 - Prob. 9.28EPCh. 9 - Prob. 9.29EPCh. 9 - Prob. 9.30EPCh. 9 - Prob. 9.31EPCh. 9 - Prob. 9.32EPCh. 9 - Prob. 9.33EPCh. 9 - Prob. 9.34EPCh. 9 - To which family of mirror-image isomers do nearly...Ch. 9 - In what way is the structure of glycine different...Ch. 9 - Draw Fischer projection formulas for the following...Ch. 9 - Draw Fischer projection formulas for the following...Ch. 9 - Prob. 9.39EPCh. 9 - Prob. 9.40EPCh. 9 - At room temperature, amino acids are solids with...Ch. 9 - At room temperature, most amino acids are not very...Ch. 9 - Draw the zwitterion structure for each of the...Ch. 9 - Draw the zwitterion structure for each of the...Ch. 9 - Draw the structure of serine at each of the...Ch. 9 - Prob. 9.46EPCh. 9 - Prob. 9.47EPCh. 9 - Most amino acids have isoelectric points between...Ch. 9 - Glutamic acid exists in two low-pH forms instead...Ch. 9 - Arginine exists in two high-pH forms instead of...Ch. 9 - Prob. 9.51EPCh. 9 - In a high-pH aqueous solution, indicate whether...Ch. 9 - When two cysteine molecules dimerize, what happens...Ch. 9 - What chemical reaction involving the cysteine...Ch. 9 - What two functional groups are involved in the...Ch. 9 - Prob. 9.56EPCh. 9 - Prob. 9.57EPCh. 9 - Prob. 9.58EPCh. 9 - Prob. 9.59EPCh. 9 - What are the two alternating structure units...Ch. 9 - Draw a complete condensed structural...Ch. 9 - Draw a complete condensed structural...Ch. 9 - With the help of Table 20-1, identify the amino...Ch. 9 - Prob. 9.64EPCh. 9 - Prob. 9.65EPCh. 9 - With the help of Table 20-1, assign an IUPAC name...Ch. 9 - Prob. 9.67EPCh. 9 - Draw condensed structural formulas for the...Ch. 9 - Prob. 9.69EPCh. 9 - For the tripeptide SerArgIle which amino acid...Ch. 9 - Prob. 9.71EPCh. 9 - Consider the tripeptide leucylvalyltryptophan. a....Ch. 9 - Explain why the notations SerCys and CysSer...Ch. 9 - Explain why the notations AlaGlyValAla and...Ch. 9 - Prob. 9.75EPCh. 9 - There are a total of six different amino acid...Ch. 9 - Compare the structures of the protein hormones...Ch. 9 - Compare the protein hormones oxytocin and...Ch. 9 - Prob. 9.79EPCh. 9 - Compare the structures of the peptide...Ch. 9 - Prob. 9.81EPCh. 9 - Prob. 9.82EPCh. 9 - Prob. 9.83EPCh. 9 - Prob. 9.84EPCh. 9 - Indicate whether each of the following statements...Ch. 9 - Indicate whether each of the following statements...Ch. 9 - Prob. 9.87EPCh. 9 - Two proteins with the same amino acid composition...Ch. 9 - Prob. 9.89EPCh. 9 - Prob. 9.90EPCh. 9 - Prob. 9.91EPCh. 9 - Prob. 9.92EPCh. 9 - Prob. 9.93EPCh. 9 - Prob. 9.94EPCh. 9 - Prob. 9.95EPCh. 9 - Prob. 9.96EPCh. 9 - Prob. 9.97EPCh. 9 - Prob. 9.98EPCh. 9 - Prob. 9.99EPCh. 9 - Why is the phrase unstructured segment of a...Ch. 9 - State the four types of attractive forces that...Ch. 9 - Prob. 9.102EPCh. 9 - Prob. 9.103EPCh. 9 - Prob. 9.104EPCh. 9 - Prob. 9.105EPCh. 9 - Prob. 9.106EPCh. 9 - Indicate whether each of the following statements...Ch. 9 - Prob. 9.108EPCh. 9 - Prob. 9.109EPCh. 9 - Prob. 9.110EPCh. 9 - Prob. 9.111EPCh. 9 - Quaternary protein structure is more easily...Ch. 9 - Prob. 9.113EPCh. 9 - Prob. 9.114EPCh. 9 - Prob. 9.115EPCh. 9 - Prob. 9.116EPCh. 9 - Prob. 9.117EPCh. 9 - How many different di- and tripeptides could be...Ch. 9 - Identify the primary structure of a hexapeptide...Ch. 9 - Identify the primary structure of a hexapeptide...Ch. 9 - Draw structural formulas for the products obtained...Ch. 9 - Prob. 9.122EPCh. 9 - Prob. 9.123EPCh. 9 - Why is complete hydrolysis of a protein not also...Ch. 9 - In what way is the protein in a cooked egg the...Ch. 9 - Why is cooked protein more easily digested than...Ch. 9 - Prob. 9.127EPCh. 9 - Indicate whether or not each of the following...Ch. 9 - Prob. 9.129EPCh. 9 - Prob. 9.130EPCh. 9 - Prob. 9.131EPCh. 9 - What is the major biochemical function of each of...Ch. 9 - Using the list in Section 20-17, characterize each...Ch. 9 - Prob. 9.134EPCh. 9 - Prob. 9.135EPCh. 9 - Prob. 9.136EPCh. 9 - What two nonstandard amino acids are present in...Ch. 9 - Prob. 9.138EPCh. 9 - Prob. 9.139EPCh. 9 - Prob. 9.140EPCh. 9 - Prob. 9.141EPCh. 9 - Prob. 9.142EPCh. 9 - Prob. 9.143EPCh. 9 - Describe the process by which blood...Ch. 9 - Prob. 9.145EPCh. 9 - Prob. 9.146EPCh. 9 - Prob. 9.147EPCh. 9 - Prob. 9.148EPCh. 9 - Prob. 9.149EPCh. 9 - As the lipid content of a plasma lipoprotein...Ch. 9 - Prob. 9.151EPCh. 9 - Prob. 9.152EP
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