Introduction to General, Organic and Biochemistry 11th Edition
ISBN: 9781285869759
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
1 Matter, Energy, And Measurement 2 Atoms 3 Chemical Bonds 4 Chemical Reactions 5 Gases, Liquids, And Solids 6 Solutions And Colloids 7 Reaction Rates And Chemical Equilibrium 8 Acids And Bases 9 Nuclear Chemistry 10 Organic Chemistry 11 Alkanes 12 Alkenes And Alkynes 13 Benzene And Its Derivatives 14 Alcohols, Ethers, And Thiols 15 Chirality: The Handedness Of Molecules 16 Amines 17 Aldehydes And Ketones 18 Carboxylic Acids 19 Carboxylic Anhydrides, Esters, And Amides 20 Carbohydrates 21 Lipids 22 Proteins 23 Enzymes 24 Chemical Communications: Neurotransmitters And Hormones 25 Nucleotides, Nucleic Acids, And Heredity 26 Gene Expression And Protein Synthesis 27 Bioenergetics: How The Body Converts Food To Energy 28 Specific Catabolic Pathways: Carbohydrate, Lipid, And Protein Metabolism 29 Biosynthetic Pathways 30 Nutrition 31 Immunochemistry Chapter22: Proteins
22.1 What Are The Many Functions Of Proteins? 22.2 What Are Amino Acids? 22.3 What Are Zwitterions? 22.4 How Do Amino Acids Combine To Form Proteins? 22.5 What Determines The Characteristics Of Amino Acids? 22.6 What Are Uncommon Amino Acids? 22.7 What Are The Properties Of Proteins? 22.8 What Is The Primary Structure Of A Protein? 22.9 What Is The Secondary Structure Of A Protein? 22.10 Interlude: How Does The Presence Of Transition Metals Affect The Structure Of Proteins? 22.11 What Is The Tertiary Structure Of A Protein? 22.12 What Is The Quaternary Structure Of A Protein? 22.13 How Are Proteins Denatured? Chapter Questions Section: Chapter Questions
Problem 22.5P: 22-5 What are the functions of (a) ovalbumin and (b) myosin? Problem 22.6P: 22-6 The members of which class of proteins are insoluble in water and can serve as structural... Problem 22.7P: 22-7 What is the function of an immunoglobulin? Problem 22.8P Problem 22.9P: 22-9 What is the difference in structure between tyrosine and phenylalanine? Problem 22.10P: 22-10 Classify the following amino acids as nonpolar, polar but neutral, acidic, or basic. (a)... Problem 22.11P: 22-11 Which amino acid has the highest percentage of nitrogen (g N/100 g amino acid)? Problem 22.12P Problem 22.13P Problem 22.14P Problem 22.15P Problem 22.16P: 22-16 Which amino acids in Table 22-1 have more than one stereocenter? Problem 22.17P: 22-17 What are the similarities and differences in the structures of alanine and phenylalanine? Problem 22.18P: 22-18 Draw the structures of L- and D-valine. Problem 22.19P Problem 22.20P: 22-20 Show how alanine, in solution at its isoelectric point, acts as a buffer (write equations to... Problem 22.21P: 22-21 Explain why an amino acid cannot exist in an un-ionized form at any pH. Problem 22.22P: 22-22 Draw the structure of valine at pH 1 and at pH 12. Problem 22.23P Problem 22.24P: 22-24 Draw the most predominant form of histidine at its isoelectric point. Problem 22.25P: 22-25 Draw the most predominant form of lysine at its isoelectric point. Problem 22.26P Problem 22.27P: 22-27 Show by chemical equations how alanine and glutamine can be combined to give two different... Problem 22.28P: 22-28 A tetrapeptide is abbreviated as DPKH. Which amino acid is at the N-terminus, and which is at... Problem 22.29P: 22-29 Draw the structure of a tripeptide made of threomne, arginine, and methionine. Problem 22.30P: 22-30 (a) Use the three-letter abbreviations to write a representation of the following tripeptide:... Problem 22.31P: 22-31 A polypeptide chain is made of alternating valine and phenylalanine. Which part of the... Problem 22.32P Problem 22.33P: 22-33 Which of the three functional groups on histidine is the most unique? Problem 22.34P Problem 22.35P: 22-35 Why is histidine considered a basic amino acid when the pKa of its side chain is 6.0? Problem 22.36P Problem 22.37P Problem 22.38P: 22-38 Why does proline not absorb light at 280 nm? Problem 22.39P Problem 22.40P Problem 22.41P Problem 22.42P: 22-42 (a) How many atoms of the peptide bond lie in the same plane? (b) Which atoms are they? Problem 22.43P: 22-43 (a) Draw the structural formula of the tripeptide Met—Ser—Cys. (b) Draw the different ionic... Problem 22.44P: 22-44 How can a protein act as a buffer? Problem 22.45P: 22-45 Proteins are least soluble at their isoelectric points. What would happen to a protein... Problem 22.46P: 22-46 How many different tripeptides can be made (a) using one, two, or three residues each of... Problem 22.47P: 22-47 How many different tetrapeptides can be made (a) if the peptides contain the residues of... Problem 22.48P: 22-48 How many amino acid residues in the A chain of insulin are the same in insulin from humans,... Problem 22.49P: 22-49 Based on your knowledge of the chemical properties of amino acid side chains, suggest a... Problem 22.50P: 22-50 Is a random coil a (a) primary, (b) secondary, (c) tertiary or (d) quaternary structure?... Problem 22.51P: 22-51 Decide whether the following structures that exist in collagen are primary, secondary... Problem 22.52P Problem 22.53P: 22-53 Do iron and zinc ions play role in protein structure? If so, what is the role for either or... Problem 22.54P Problem 22.55P: 22-55 Consider the coordination compound Fe(CO)5 and show that in forming this compound, the... Problem 22.56P Problem 22.57P: 22-57 Consider the coordination compound [Zn(NH3)2Cl2], which contains Zn(NH3)22+ and Cl ions. Show... Problem 22.58P Problem 22.59P: 22-59 What is the effect of salt bridges on the tertiary structure of proteins? Problem 22.60P Problem 22.61P: 22-61 Polyglutamic acid (a polypeptide chain made only of glutamic acid residues) has an a-helix... Problem 22.62P: 22-62 Distinguish between intermolecular and intramolecular hydrogen bonding between backbone... Problem 22.63P: 22-63 Identify the primary, secondary, and tertiary structures in the numbered boxes: Problem 22.64P: 22-64 If both cysteine residues on the B chain of insulin were changed to alanine residues, how... Problem 22.65P: 22-65 (a) What is the difference in the quaternary structure between fetal hemoglobin and adult... Problem 22.66P Problem 22.67P Problem 22.68P Problem 22.69P Problem 22.70P Problem 22.71P: 22-71 Which amino acid side chain is most frequently involved in denaturation by reduction? Problem 22.72P: 22-72 What does the reducing agent do in straightening curly hair? Problem 22.73P: 22-73 Silver nitrate is sometimes put into the eyes of newborn infants as a preventive measure... Problem 22.74P: 22-74 Why do nurses and physicians use 70% alcohol to wipe the skin before giving injections? Problem 22.75P: 22-75 (Chemical Connections 22A) Why must some people avoid drinking diet sodas with Nutrasweet? Problem 22.76P Problem 22.77P Problem 22.78P Problem 22.79P Problem 22.80P Problem 22.81P Problem 22.82P: 22-82 (Chemical Connections 22H) How does the fiberscope help to heal bleeding ulcers? Problem 22.83P Problem 22.84P: 22-84 How many different dipeptides can be made (a) using only alanine, tryptophan, glutamic acid,... Problem 22.85P: 22-85 Denaturation is usually associated with transitions from helical structures to random coils.... Problem 22.86P Problem 22.87P Problem 22.88P Problem 22.89P: 22-89 What kind of noncovalent interaction occurs between the following amino acids? (a) Valine and... Problem 22.90P Problem 22.91P: 22-91 Which amino acid does not rotate the plane of polarized light? Problem 22.92P: 22-92 Write the expected products of the acid hydrolysis of the following tetrapeptide: Problem 22.93P: 22-93 What charges are on aspartic acid at pH 2.0? Problem 22.94P Problem 22.95P Problem 22.96P Problem 22.97P: 22-97 Gelatin is derived from collagen by denaturation. Is a gelatin dessert likely to be a good... Problem 22.98P Problem 22.99P Problem 22.100P Problem 22.101P: 22-101 Using what you know about protein denaturation, what is one reason you must maintain a body... Problem 22.102P Problem 22.103P Problem 22.104P: 22-104 Why is collagen not a very good source of dietary protein? Problem 22.105P Problem 22.47P: 22-47 How many different tetrapeptides can be made (a) if the peptides contain the residues of...
Related questions
Concept explainers
Which of the following is(are) true in Xanthoproteic test?
Detect the presence of aromatic amino acids
confirmatory test for tryptophan
A nitro-substituted products turn red when made alkali.
all the choices are correct
Definition Definition Organic compounds with a planar cyclic ring of atoms bonded through alternated single and double bonds. Aromatic organic compounds, also called arenes, are an important class of hydrocarbons under the branch of organic chemistry.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 3 images
