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General, Organic, and Biological Chemistry
7th Edition
ISBN: 9781285853918
Author: H. Stephen Stoker
Publisher: Cengage Learning
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Chapter 20, Problem 20.139EP
Interpretation Introduction
Interpretation: The function of the carbohydrate groups present in collagen has to be stated.
Concept introduction: The carbohydrate units are present in collagen. Oftenly, glucose, galactose and their disaccharides are the carbohydrates that are attached to collagen by glycosidic linkages.
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Students have asked these similar questions
Complete the following table. The only density needed is already given. Show your
calculations in a neat and easy-to-follow manner in the space below the table. All units
should be included and significant figures should be given close attention. Be sure to notice
that the amount of material should be in millimoles rather than moles, and the theoretical
mass of the product should in milligrams rather than grams.
LOCH 3
+
H2SO4
HNO 3
O=C-OCH 3
NO2
x
H₂O
F.W.
4.0 mL 1.3 M
amount
0.50 mL
in H2SO4
mg Theoretical
Theoretical
mmoles
density
1.09
Kumada Coupling:
1. m-Diisobutylbenzene below could hypothetically be synthesized by Friedel-Crafts reaction. Write out the reaction with a
mechanism and give two reasons why you would NOT get the desired product.
Draw the reaction (NOT a mechanism) for a Kumada coupling to produce the molecule above from m-dichlorobenzene.
Calculate the theoretical yield for the reaction in question 2 using 1.5 g of p-dichlorobenzene and 3.0 mL isobutyl bromide.
What signals appeared/disappeared/shifted that indicate that you have your intended product and not starting material? What
other impurities are present in your product and how do you know?
Wintergreen from Aspirin:
1. In isolating the salicylic acid, why is it important to press out as much of the water as possible?
2. Write the mechanism of the esterification reaction you did.
3.
What characteristic absorption band changes would you expect in the IR spectrum on going from aspirin to salicyclic acid and
then to methyl salicylate as you did in the experiment today? Give approximate wavenumbers associated with each functional
group change.
What signals appeared/disappeared/shifted that indicate that you have your intended product and not starting material? What
other impurities are present in your product and how do you know?
Chapter 20 Solutions
General, Organic, and Biological Chemistry
Ch. 20.1 - Prob. 1QQCh. 20.1 - Proteins are naturally occurring unbranched...Ch. 20.2 - Prob. 1QQCh. 20.2 - How do the various standard amino acids differ...Ch. 20.2 - The number of carboxyl groups and amino groups...Ch. 20.2 - How many different subclassifications are there...Ch. 20.2 - Which of the following statements concerning...Ch. 20.3 - Prob. 1QQCh. 20.3 - Proteins from plant sources are a. always complete...Ch. 20.3 - Prob. 3QQ
Ch. 20.4 - Prob. 1QQCh. 20.4 - Which of the following groups is positioned at the...Ch. 20.4 - Which of the following statements concerning...Ch. 20.5 - Which of the standard amino acids exist as...Ch. 20.5 - Which of the following is the zwitterion ion...Ch. 20.5 - Which of the following is the structural form for...Ch. 20.6 - Prob. 1QQCh. 20.6 - Prob. 2QQCh. 20.7 - The joining together of two amino acids to form a...Ch. 20.7 - The number of peptide bonds present in a...Ch. 20.7 - Which of the following statements concerning the...Ch. 20.7 - Prob. 4QQCh. 20.7 - How many isomeric tripeptides can be formed from...Ch. 20.8 - The two best-known peptide hormones present in the...Ch. 20.8 - Which of the following peptides is an important...Ch. 20.9 - The term protein is generally reserved for...Ch. 20.9 - Prob. 2QQCh. 20.9 - Which of the following is not a distinguishing...Ch. 20.10 - Specifying the primary structure of a protein...Ch. 20.10 - Prob. 2QQCh. 20.10 - Prob. 3QQCh. 20.11 - Prob. 1QQCh. 20.11 - Prob. 2QQCh. 20.11 - Prob. 3QQCh. 20.12 - Prob. 1QQCh. 20.12 - Hydrophobic interactions associated with protein...Ch. 20.12 - R group interactions between which of the...Ch. 20.13 - Prob. 1QQCh. 20.13 - Which of the following types of interactions does...Ch. 20.14 - The complete hydrolysis of a protein produces a...Ch. 20.14 - Which of the following statements concerning...Ch. 20.15 - Which of the following levels of protein structure...Ch. 20.15 - Which of the following does not involve protein...Ch. 20.15 - Prob. 3QQCh. 20.16 - Prob. 1QQCh. 20.16 - Prob. 2QQCh. 20.16 - Prob. 3QQCh. 20.16 - In which of the following pairs of proteins are...Ch. 20.17 - Insulin and human growth hormone are examples of...Ch. 20.17 - Myoglobin and transferrin are examples of a....Ch. 20.17 - Prob. 3QQCh. 20.18 - Prob. 1QQCh. 20.18 - Prob. 2QQCh. 20.18 - Prob. 3QQCh. 20.19 - Prob. 1QQCh. 20.19 - Which of the following types of plasma...Ch. 20.19 - Prob. 3QQCh. 20 - Prob. 20.1EPCh. 20 - What element is always present in proteins that is...Ch. 20 - What percent of a cells overall mass is accounted...Ch. 20 - Approximately how many different proteins are...Ch. 20 - What is signified when an amino acid is designated...Ch. 20 - What functional groups are present in all -amino...Ch. 20 - Indicate whether or not each of the following...Ch. 20 - Indicate whether or not each of the following...Ch. 20 - How many carbon atoms are present in the R group...Ch. 20 - How many carbon atoms are present in the R group...Ch. 20 - With the help of Table 20-1, determine the name...Ch. 20 - With the help of Table 20-1, determine the name...Ch. 20 - With the help of Table 20-1, classify each of the...Ch. 20 - With the help of Table 20-1, classify each of the...Ch. 20 - Prob. 20.15EPCh. 20 - With the help of Table 20-1, classify each of the...Ch. 20 - Prob. 20.17EPCh. 20 - Prob. 20.18EPCh. 20 - Prob. 20.19EPCh. 20 - Prob. 20.20EPCh. 20 - Prob. 20.21EPCh. 20 - How many amino groups and how many carboxyl groups...Ch. 20 - Prob. 20.23EPCh. 20 - Which two of the standard amino acids are...Ch. 20 - Prob. 20.25EPCh. 20 - Prob. 20.26EPCh. 20 - Prob. 20.27EPCh. 20 - Prob. 20.28EPCh. 20 - Prob. 20.29EPCh. 20 - Prob. 20.30EPCh. 20 - Indicate whether or not the designation...Ch. 20 - Indicate whether or not the designation...Ch. 20 - Prob. 20.33EPCh. 20 - Prob. 20.34EPCh. 20 - To which family of mirror-image isomers do nearly...Ch. 20 - In what way is the structure of glycine different...Ch. 20 - Draw Fischer projection formulas for the following...Ch. 20 - Draw Fischer projection formulas for the following...Ch. 20 - Answer the following questions about the amino...Ch. 20 - Answer the following questions about the amino...Ch. 20 - At room temperature, amino acids are solids with...Ch. 20 - At room temperature, most amino acids are not very...Ch. 20 - Prob. 20.43EPCh. 20 - Draw the zwitterion structure for each of the...Ch. 20 - Draw the structure of serine at each of the...Ch. 20 - Prob. 20.46EPCh. 20 - Prob. 20.47EPCh. 20 - Most amino acids have isoelectric points between...Ch. 20 - Glutamic acid exists in two low-pH forms instead...Ch. 20 - Arginine exists in two high-pH forms instead of...Ch. 20 - In a low-pH aqueous solution, indicate whether...Ch. 20 - Prob. 20.52EPCh. 20 - When two cysteine molecules dimerize, what happens...Ch. 20 - What chemical reaction involving the cysteine...Ch. 20 - What two functional groups are involved in the...Ch. 20 - Write a generalized structural representation for...Ch. 20 - For the tripeptide GlyAlaCys a. What amino acid is...Ch. 20 - For the tripeptide SerValMet a. What amino acid is...Ch. 20 - Prob. 20.59EPCh. 20 - Prob. 20.60EPCh. 20 - Draw a complete condensed structural...Ch. 20 - Draw a complete condensed structural...Ch. 20 - With the help of Table 20-1, identify the amino...Ch. 20 - With the help of Table 20-1, identify the amino...Ch. 20 - With the help of Table 20-1, assign an IUPAC name...Ch. 20 - With the help of Table 20-1, assign an IUPAC name...Ch. 20 - Prob. 20.67EPCh. 20 - Prob. 20.68EPCh. 20 - For the tripeptide AlaValGly which amino acid...Ch. 20 - For the tripeptide SerArgIle which amino acid...Ch. 20 - Consider the tripeptide tyrosylleucylisoleucine....Ch. 20 - Consider the tripeptide leucylvalyltryptophan. a....Ch. 20 - Explain why the notations SerCys and CysSer...Ch. 20 - Explain why the notations AlaGlyValAla and...Ch. 20 - Prob. 20.75EPCh. 20 - There are a total of six different amino acid...Ch. 20 - Compare the structures of the protein hormones...Ch. 20 - Compare the protein hormones oxytocin and...Ch. 20 - Compare the binding-site locations in the brain...Ch. 20 - Compare the structures of the peptide...Ch. 20 - Prob. 20.81EPCh. 20 - Prob. 20.82EPCh. 20 - What is the major difference between a monomeric...Ch. 20 - What is the major difference between a simple...Ch. 20 - Prob. 20.85EPCh. 20 - Prob. 20.86EPCh. 20 - Prob. 20.87EPCh. 20 - Two proteins with the same amino acid composition...Ch. 20 - How many different primary structures are possible...Ch. 20 - How many different primary structures are possible...Ch. 20 - How many different primary structures are possible...Ch. 20 - How many different primary structures are possible...Ch. 20 - Prob. 20.93EPCh. 20 - Draw a segment of the backbone of a protein that...Ch. 20 - Prob. 20.95EPCh. 20 - In a pleated sheet secondary structure for a...Ch. 20 - Indicate whether each of the following statements...Ch. 20 - Indicate whether each of the following statements...Ch. 20 - Prob. 20.99EPCh. 20 - Prob. 20.100EPCh. 20 - State the four types of attractive forces that...Ch. 20 - Prob. 20.102EPCh. 20 - Prob. 20.103EPCh. 20 - Prob. 20.104EPCh. 20 - Prob. 20.105EPCh. 20 - Prob. 20.106EPCh. 20 - Prob. 20.107EPCh. 20 - Prob. 20.108EPCh. 20 - Prob. 20.109EPCh. 20 - Not all proteins have quaternary structure....Ch. 20 - Prob. 20.111EPCh. 20 - Prob. 20.112EPCh. 20 - Prob. 20.113EPCh. 20 - Prob. 20.114EPCh. 20 - Prob. 20.115EPCh. 20 - Prob. 20.116EPCh. 20 - Prob. 20.117EPCh. 20 - Prob. 20.118EPCh. 20 - Identify the primary structure of a hexapeptide...Ch. 20 - Identify the primary structure of a hexapeptide...Ch. 20 - Draw structural formulas for the products obtained...Ch. 20 - Prob. 20.122EPCh. 20 - Which structural levels of a protein are affected...Ch. 20 - Prob. 20.124EPCh. 20 - In what way is the protein in a cooked egg the...Ch. 20 - Why is cooked protein more easily digested than...Ch. 20 - Indicate whether or not each of the following...Ch. 20 - Prob. 20.128EPCh. 20 - Prob. 20.129EPCh. 20 - Contrast fibrous and globular proteins in terms of...Ch. 20 - Classify each of the following proteins as a...Ch. 20 - What is the major biochemical function of each of...Ch. 20 - Prob. 20.133EPCh. 20 - Prob. 20.134EPCh. 20 - Prob. 20.135EPCh. 20 - Prob. 20.136EPCh. 20 - Prob. 20.137EPCh. 20 - Where are the carbohydrate units located in...Ch. 20 - Prob. 20.139EPCh. 20 - Prob. 20.140EPCh. 20 - Prob. 20.141EPCh. 20 - Prob. 20.142EPCh. 20 - Prob. 20.143EPCh. 20 - Describe the process by which blood...Ch. 20 - Prob. 20.145EPCh. 20 - Prob. 20.146EPCh. 20 - Prob. 20.147EPCh. 20 - Prob. 20.148EPCh. 20 - Prob. 20.149EPCh. 20 - Prob. 20.150EPCh. 20 - Prob. 20.151EPCh. 20 - Prob. 20.152EP
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