GENERAL,ORGANIC, & BIOLOGICAL CHEM-ACCES

4th Edition

ISBN: 9781265982959

Author: SMITH

Publisher: MCG

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Vitamins and Coenzymes

A class of organic compounds needed in the human body for normal activities is known as vitamins. They are characterized into two parts depending upon their solubility in water. They can act as coenzymes, cofactors, or prosthetic groups for enzymes.

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Textbook Question

Chapter 21.7, Problem 21.10P

Why is hemoglobin more water soluble than α − keratin?

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Chapter 21.6, Problem 21.9P

Chapter 21.8, Problem 21.7PP

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Reagan is doing an atomic absorption experiment that requires a set of zinc standards in the 0.4-1.6 ppm range. A 1000 ppm Zn solution was prepared by dissolving the necessary amount of solid Zn(NO3)2 in water. The standards can be prepared by diluting the 1000 ppm Zn solution. Table 1 shows one possible set of serial dilutions (stepwise dilution of a solution) that Reagan could perform to make the necessary standards. Solution A was prepared by diluting 5.00 ml of the 1000 ppm Zn standard to 50.00 ml. Solutions C-E are called "calibration standards" because they will be used to calibrate the atomic absorption spectrometer. a. Compare the solution concentrations expressed as ppm Zn and ppm Zn(NO3)2. Compare the concentrations expressed as M Zn and M Zn(NO3)2 - Which units allow easy conversion between chemical species (e.g. Zn and Zn(NO3)2)? - Which units express concentrations in numbers with easily expressed magnitudes? - Suppose you have an analyte for which you don't know the molar…

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Chapter 21 Solutions

GENERAL,ORGANIC, & BIOLOGICAL CHEM-ACCES

Ch. 21.2 - In addition to the amino and carboxyl groups, what...Ch. 21.2 - Draw both enantiomers of each amino acid in...Ch. 21.2 - Which of the following amino acids is naturally...Ch. 21.3 - Draw the structure of the amino acid valine at...Ch. 21.3 - Identify the amino acid shown with all uncharged...Ch. 21.4 - Identify the N-terminal and C-terminal amino acid...Ch. 21.4 - Prob. 21.4P Ch. 21.4 - Prob. 21.4PP Ch. 21.4 - Prob. 21.5P Ch. 21.4 - Prob. 21.5PP

Ch. 21.4 - Prob. 21.6PP Ch. 21.5 - Prob. 21.6P Ch. 21.6 - Prob. 21.7P Ch. 21.6 - Prob. 21.8P Ch. 21.6 - Prob. 21.9P Ch. 21.7 - Why is hemoglobin more water soluble than ...Ch. 21.8 - Prob. 21.7PP Ch. 21.8 - Prob. 21.11P Ch. 21.9 - Prob. 21.8PP Ch. 21.9 - Prob. 21.12P Ch. 21.9 - Prob. 21.9PP Ch. 21.9 - Prob. 21.13P Ch. 21.10 - Prob. 21.14P Ch. 21.10 - Prob. 21.15P Ch. 21.10 - Prob. 21.16P Ch. 21.10 - Prob. 21.17P Ch. 21.10 - The nerve gas sarin acts as a poison by covalently...Ch. 21.10 - Prob. 21.19P Ch. 21.10 - Explain why the proteins involved in blood...Ch. 21 - The amino acid alanine is a solid at room...Ch. 21 - Why is phenylalanine water soluble but...Ch. 21 - Draw the structure of a naturally occurring amino...Ch. 21 - Draw the structure of a naturally occurring amino...Ch. 21 - For each amino acid: [1] draw the L enantiomer in...Ch. 21 - For each amino acid: [1] draw the L enantiomer in...Ch. 21 - Draw both enantiomers of each amino acid and label...Ch. 21 - Which of the following Fischer projections...Ch. 21 - For each amino acid: [1] give the name; [2] give...Ch. 21 - For each amino acid: [1] give the name; [2] give...Ch. 21 - (a) Identify the amino acid shown with all...Ch. 21 - Prob. 32P Ch. 21 - Prob. 33P Ch. 21 - Draw the structure of the neutral, positively...Ch. 21 - Locate the peptide bond in the dipeptide shown in...Ch. 21 - Label the N-terminal and C-terminal amino acids in...Ch. 21 - Melittin, the principal toxin of bee venom,...Ch. 21 - Cobratoxin is a neurotoxin found in the venom of...Ch. 21 - (a) Draw the structure of the two possible...Ch. 21 - (a) Draw the structure of the two possible...Ch. 21 - For each tripeptide: [1] draw the structure of the...Ch. 21 - For each tripeptide: [1] draw the structure of the...Ch. 21 - Prob. 43P Ch. 21 - For each tripeptide: [1] identify the amino acids...Ch. 21 - What amino acids are formed by hydrolysis of the...Ch. 21 - Prob. 46P Ch. 21 - Prob. 47P Ch. 21 - Draw the structures of the amino acids formed when...Ch. 21 - Prob. 49P Ch. 21 - Prob. 50P Ch. 21 - Prob. 51P Ch. 21 - Trypsin is a digestive enzyme that hydrolyzes...Ch. 21 - What type of intermolecular forces exist between...Ch. 21 - What type of interaction occur at each of the...Ch. 21 - Which peptide in each pair contains amino acids...Ch. 21 - Decide if the side chains of the amino acid...Ch. 21 - Which type of protein structure is indicated in...Ch. 21 - Label each of the following diagrams as...Ch. 21 - Prob. 59P Ch. 21 - Prob. 60P Ch. 21 - Prob. 61P Ch. 21 - Prob. 62P Ch. 21 - Compare - keratin and hemoglobin with regard to...Ch. 21 - Compare collagen and myoglobin with regard to each...Ch. 21 - Prob. 65P Ch. 21 - Prob. 66P Ch. 21 - Describe the function or biological activity of...Ch. 21 - Describe the function or biological activity of...Ch. 21 - Prob. 69P Ch. 21 - Prob. 70P Ch. 21 - What class of enzyme catalyzes each of the...Ch. 21 - What class of enzyme catalyzes each of the...Ch. 21 - Prob. 73P Ch. 21 - Prob. 74P Ch. 21 - Prob. 75P Ch. 21 - What kind of reaction is catalyzed by each of the...Ch. 21 - Prob. 77P Ch. 21 - How will each of the following changes affect the...Ch. 21 - Prob. 79P Ch. 21 - Prob. 80P Ch. 21 - Prob. 81P Ch. 21 - Prob. 82P Ch. 21 - Prob. 83P Ch. 21 - Prob. 84P Ch. 21 - Prob. 85P Ch. 21 - Prob. 86P Ch. 21 - Why must vegetarian diets be carefully balanced?Ch. 21 - Prob. 88P Ch. 21 - Sometimes an incision is cauterized (burned) to...Ch. 21 - Why is insulin administered by injection instead...Ch. 21 - Prob. 91P Ch. 21 - The silk produced by a silkworm is a protein with...Ch. 21 - Explain the difference in the mechanism of action...Ch. 21 - Prob. 94P Ch. 21 - Prob. 95CP Ch. 21 - Suggest a reason for the following observation....

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