Introduction To General, Organic, And Biochemistry
12th Edition
ISBN: 9781337571357
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Cengage Learning
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Textbook Question
Chapter 21.4, Problem 21.4QC
Problem 22-1
Show how to form the dipeptide valyiphenylalanine (Val—Phe).
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Part A
At what pH will the following tripeptide have this structure?
H2N -CH-
C-
CH-
CH
CH2
CH2
CH2
OH
CH-CH3
CH2
CH3
O pH 1 and pH 7
O there is no pH where this form exists
O pH 1, pH 7, pH 12
O pH 7 and pH 12
O pH 7
O pH 12
P Pearson
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Which amino acids are present in the peptide shown below? [Select all that
apply.]
OH
H3NⓇ
N
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TUTD
At what pH will the following tripeptide have this structure?
H2N -CH-ĉ-
CH
N-CH-
CH2
CH-OH
CH2
CH3
C=0
NH2
OpH 1
OpH 1, pH 7, pH 12
O there is no pH where this form exists
O pH 7 and pH 12
O pH 7
O pH 12
O pH 1 and pH 7
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Chapter 21 Solutions
Introduction To General, Organic, And Biochemistry
Ch. 21.1 - Prob. 21.1QCCh. 21.2 - Prob. 21.2QCCh. 21.3 - What is the overall charge (+,0, or ) for the...Ch. 21.4 - Problem 22-1 Show how to form the dipeptide...Ch. 21.5 - Prob. 21.5QCCh. 21.7 - Prob. 21.6QCCh. 21.8 - Prob. 21.7QCCh. 21.8 - Prob. 21.8QCCh. 21.10 - Prob. 21.9QCCh. 21 - 22-5 What are the functions of (a) ovalbumin and...
Ch. 21 - 22-6 The members of which class of proteins are...Ch. 21 - 22-7 What is the function of an immunoglobulin?Ch. 21 - Prob. 4PCh. 21 - 22-9 What is the difference in structure between...Ch. 21 - 22-10 Classify the following amino acids as...Ch. 21 - 22-11 Which amino acid has the highest percentage...Ch. 21 - Prob. 8PCh. 21 - Prob. 9PCh. 21 - Prob. 10PCh. 21 - Prob. 11PCh. 21 - Prob. 12PCh. 21 - 22-17 What are the similarities and differences in...Ch. 21 - 22-18 Draw the structures of L- and D-valine.Ch. 21 - Prob. 15PCh. 21 - 22-20 Show how alanine, in solution at its...Ch. 21 - 22-21 Explain why an amino acid cannot exist in an...Ch. 21 - 22-22 Draw the structure of valine at pH 1 and at...Ch. 21 - Prob. 19PCh. 21 - 22-24 Draw the most predominant form of histidine...Ch. 21 - 22-25 Draw the most predominant form of lysine at...Ch. 21 - Prob. 22PCh. 21 - 22-27 Show by chemical equations how alanine and...Ch. 21 - 22-28 A tetrapeptide is abbreviated as DPKH. Which...Ch. 21 - 22-29 Draw the structure of a tripeptide made of...Ch. 21 - 22-30 (a) Use the three-letter abbreviations to...Ch. 21 - 22-31 A polypeptide chain is made of alternating...Ch. 21 - Prob. 28PCh. 21 - 22-33 Which of the three functional groups on...Ch. 21 - Prob. 30PCh. 21 - 22-35 Why is histidine considered a basic amino...Ch. 21 - Prob. 32PCh. 21 - Prob. 33PCh. 21 - 22-38 Why does proline not absorb light at 280 nm?Ch. 21 - Prob. 35PCh. 21 - Prob. 36PCh. 21 - Prob. 37PCh. 21 - 22-42 (a) How many atoms of the peptide bond lie...Ch. 21 - 22-43 (a) Draw the structural formula of the...Ch. 21 - 22-44 How can a protein act as a buffer?Ch. 21 - 22-45 Proteins are least soluble at their...Ch. 21 - 22-46 How many different tripeptides can be made...Ch. 21 - 22-47 How many different tetrapeptides can be made...Ch. 21 - 22-48 How many amino acid residues in the A chain...Ch. 21 - 22-49 Based on your knowledge of the chemical...Ch. 21 - Prob. 46PCh. 21 - 22-59 What is the effect of salt bridges on the...Ch. 21 - Prob. 48PCh. 21 - 22-61 Polyglutamic acid (a polypeptide chain made...Ch. 21 - 22-62 Distinguish between intermolecular and...Ch. 21 - 22-63 Identify the primary, secondary, and...Ch. 21 - 22-64 If both cysteine residues on the B chain of...Ch. 21 - 22-65 (a) What is the difference in the quaternary...Ch. 21 - Prob. 54PCh. 21 - Prob. 55PCh. 21 - Prob. 56PCh. 21 - Prob. 57PCh. 21 - Prob. 58PCh. 21 - 22-71 Which amino acid side chain is most...Ch. 21 - 22-72 What does the reducing agent do in...Ch. 21 - 22-73 Silver nitrate is sometimes put into the...Ch. 21 - 22-74 Why do nurses and physicians use 70% alcohol...Ch. 21 - Prob. 63PCh. 21 - (Chemical Connections 21B ) AGE products become...Ch. 21 - Prob. 65PCh. 21 - Prob. 66PCh. 21 - Prob. 67PCh. 21 - Prob. 68PCh. 21 - Prob. 69PCh. 21 - 22-84 How many different dipeptides can be made...Ch. 21 - 22-85 Denaturation is usually associated with...Ch. 21 - Prob. 72PCh. 21 - Prob. 73PCh. 21 - Prob. 74PCh. 21 - 22-89 What kind of noncovalent interaction occurs...Ch. 21 - Prob. 76PCh. 21 - 22-91 Which amino acid does not rotate the plane...Ch. 21 - 22-92 Write the expected products of the acid...Ch. 21 - 22-93 What charges are on aspartic acid at pH 2.0?Ch. 21 - Prob. 80PCh. 21 - Prob. 81PCh. 21 - Prob. 82PCh. 21 - 22-97 Gelatin is derived from collagen by...Ch. 21 - Prob. 84PCh. 21 - Prob. 85PCh. 21 - Prob. 86PCh. 21 - 22-101 Using what you know about protein...Ch. 21 - 22-104 Why is collagen not a very good source of...Ch. 21 - Prob. 89P
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Problem 25-1 Draw the structure of UMP.arrow_forwardThe complete hydrolysis of a protein yields what as products? a. amino acids b. dipeptides c. monosaccharides d. glucose molecules e. no correct response givenarrow_forwardWhich amino acids are present in the peptide shown below? [Select all that apply.] H3N Methionine Histidine Glutamine !!! Alanine Proline Lysine Tyrosine Leucine Asparagine Threonine Glycine Serine Cysteine + NH3 O IZ N 00arrow_forward
- Which amino acids are present in the peptide shown below? [Select all that apply.] H₂N NH3 Gl Aspartic acid (i.e., aspartate) Threonine Methionine Glutamine Serine O Tryptophan O Cysteine Leucine Tyrosine Alanine Isoleucine O Glycine Asparagine O Histidine Glutamic acid (i.e., glutamate) O Lysine Arginine Proline Phenylalanine O Valinearrow_forwardH + H3N- C In the amino acid shown here, what is the identity of the highlighted unit? O || -C-O Question 30 of 30 CH₂ CH₂ C=O NH₂ A) alpha-carbon B) alpha-carboxyl group C) alpha-amino group D) side chain R-group Submit +arrow_forward32) What is the full structure of the naturally occurring polypeptide from protein that contains: C-V-D-V-A-C and draw the appropriate amide (polypeptide) bonds and or complete structure? Chap 26 new/relateoarrow_forward
- Which dipeptide(s), (i)-(iv), may be formed in the reaction of glycine and phenylalanine? Glycine Phenylalanine H2N- CH2- COOH (0 CH- CH OH (M) K-CH CHy-C-OH HN- CH-C CH-N-N- Ph O ) only O (ii) only KO ) and (iv) O ) and (ii) iM onlyarrow_forward2 The name for the dipeptide shown below is OH CH₂ + H₂N- CH3 O || C-C-NC-Coo Η Η CIH Н A) serine-alanine B) alanyl-serine C) seryl-alanine D) alanyl-cysteine E) seryl-cysteinearrow_forwardamino acid problemarrow_forward
- 22-31 A polypeptide chain is made of alternating valine and phenylalanine. Which part of the polypeptide is polar (hydrophilic)?arrow_forwardChoose te concet option predict the product produced from seres of rexh. Dean-Stark A) B)arrow_forwardQuestion: Estimate the net charge of the polypeptide chain(Ala-Arg-Val-His-Asp-Gln) at physiological pH and at pH 5.0. N-tur C-turarrow_forward
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