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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Chapter 21, Problem 39P
22-43 (a) Draw the structural formula of the tripeptide Met—Ser—Cys.
(b) Draw the different ionic structures of this tripeptide at pH 2.0, 7.0, and 10.0.
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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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- 5. A solution of sucrose is fermented in a vessel until the evolution of CO2 ceases. Then, the product solution is analyzed and found to contain, 45% ethanol; 5% acetic acid; and 15% glycerin by weight. If the original charge is 500 kg, evaluate; e. The ratio of sucrose to water in the original charge (wt/wt). f. Moles of CO2 evolved. g. Maximum possible amount of ethanol that could be formed. h. Conversion efficiency. i. Per cent excess of excess reactant. Reactions: Inversion reaction: C12H22O11 + H2O →2C6H12O6 Fermentation reaction: C6H12O6 →→2C2H5OH + 2CO2 Formation of acetic acid and glycerin: C6H12O6 + C2H5OH + H₂O→ CH3COOH + 2C3H8O3arrow_forwardShow work. don't give Ai generated solution. How many carbons and hydrogens are in the structure?arrow_forward13. (11pts total) Consider the arrows pointing at three different carbon-carbon bonds in the molecule depicted below. Bond B 2°C. +2°C. cleavage Bond A •CH3 + 26.← Cleavage 2°C. + Bond C +3°C• CH3 2C Cleavage E 2°C. 26. weakest bond Intact molecule Strongest 3°C 20. Gund Largest argest a. (2pts) Which bond between A-C is weakest? Which is strongest? Place answers in appropriate boxes. C Weakest bond A Produces Most Bond Strongest Bond Strongest Gund produces least stable radicals Weakest Stable radical b. (4pts) Consider the relative stability of all cleavage products that form when bonds A, B, AND C are homolytically cleaved/broken. Hint: cleavage products of bonds A, B, and C are all carbon radicals. i. Which ONE cleavage product is the most stable? A condensed or bond line representation is fine. 13°C. formed in bound C cleavage ii. Which ONE cleavage product is the least stable? A condensed or bond line representation is fine. • CH3 methyl radical Formed in Gund A Cleavage c.…arrow_forward
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