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EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
7th Edition
ISBN: 8220100853180
Author: STOKER
Publisher: CENGAGE L
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Textbook Question
Chapter 20.7, Problem 2QQ
The number of peptide bonds present in a pentapeptide is
- a. four
- b. five
- c. six
- d. no correct response
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Students have asked these similar questions
What is the isoelectric point of casein? Please choose one correct answer only.
A. pH 6.6
B. pH 5.6
C. pH 4.6
D. pH 3.6
E. None of the given options
A chemical that is used to cleave
peptide bonds is
O a. cynogen bromide
O b. perfomic acid
O c. dansyl chloride
O d. mercaptaethanol
Which of the following pairs of amino acids stabilizes a fold in a
polypeptide chain through ionic interaction at physiological pH?
A. cysteine and cysteine
B. phenylalanine and valine
C. glutamate and lysine
D. serine and threonine
Chapter 20 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
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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- The amino acid that does not contain a cyclic ring. a. proline b. threonine c. tyrosinearrow_forwardWhich of the following is not a nitrogenous base? Group of answer choices A. guanine B. uracil C. deoxyribose D. cytosine E. thyminearrow_forwardDraw the two dipeptides formed from each pair of amino acids. a. tyrosine and lysine b. threonine and glutamine c. alanine and histidinearrow_forward
- Which of the following compounds is most similar to the transition state of peptide bond hydrolysis? A. ملی سلے میری R2 D. R2. HO H .R1 B. .R1 R2 E. ОН C. HN* .R1arrow_forwardDenaturation of protein is a result of O A. cleavage of the peptide bond O B. formation of H-bond O c. breaking of H-bond D. none of these 17arrow_forwardAdjacent amino acids are linked together by the formation of a peptide bond between which of the following? A. An R group and a carboxyl group B. Two R groups C. An amine group and a carboxyl group D. Two amine groupsarrow_forward
- Identify which of the following pairs of amino acid residues can have hydrogen bonding between their side chains. A. Alaine and Glycine B. Leucine and Isoleucine C. Valinc and Asparaginc D. Threonine and Tryrosinearrow_forwardThe two amino acids having R groups with a negative net charge at pH 7.0 are _______ A. Aspartate and Glutamate B. Arginine and Histidine C. Cysteine and Methionine D. Proline and Valinearrow_forwardName the structure below: A. Adenosine B. Cytidine C. Thymidylate D. Adenylatearrow_forward
- The pKa of the Histidine side chain is 6.0. When Histidine is dissolved in a buffer with pH 5.0, the side chain is a. neutral without net charge b. more hydrophobic c. negatively charged d. positively chargedarrow_forwardwhich is true when speaking about the secondary structure of a protein A. invoves R group binding b. involves binding to other protiens c. involves hydrogen bonding of the protien backbone d. involves peptide bindingarrow_forwardSelect the amino acids that are most likely to participate in hydrophobic interations. SELECT ALL THAT APPLY A. Valine B. Leuicine C. Phenylalanine D. Aspartatearrow_forward
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