Concept explainers
Answers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book.
Understanding the Chemistry of Common Foods Mayonnaise is mostly vegetable oil and vinegar. So what’s the essential difference between oil and vinegar salad dressing and mayonnaise? Learn for yourself: Combine a half cup of pure vegetable oil (olive oil will work) with two tablespoons of vinegar in a bottle, cap it securely, and shake the mixture vigorously What do you see? Mow let the mixture sit undisturbed for an hour. What d(i you see now? Add one egg yolk to the mixture, and shake vigorously again. Let the mixture Stand as before. What do you see after an hour? After two hours? Egg yolk is rich in phosphatidylcholine. Explain why the egg yolk caused the effect you observed.
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Chapter 8 Solutions
Biochemistry
- Answers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. Cells as Steady-State Systems Describe what is meant by the phrase "cells tire steady-state systems." (Section 1.4)arrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. General Controls Over Enzyme Activity List six general ways in which enzyme activity is controlled.arrow_forwardAnswers to all problems are at (he end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. Understanding State Functions Define a slate function. Name three thermodynamic quantities that are state functions and three thatarrow_forward
- Answers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. Calculating the pH of a Solution of a Weak Acid; Calculating the pH of the Solution after the Addition of Strong Base The ka for formic acid is 1.78 10-4 M. What is the pH of a 0.1 M solution of formic acid? 150 mL of 0.1 M NaOH is added to 200 mL of 0.1 M formic acid, and water is added to give a final volume of 1 L. What is the pH of the final solution?arrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. Assessing the Effect of Temperature on Equilibrium You are studying the various components of the venom of a poisonous lizard. One of the venom components is a protein that appears to be temperature sensitive. When heated, it denatures and is no longer toxic. The process can be described by the following simple equation: There is only enough protein from this venom to carry out two equilibrium measurements. At 298 K, you find that 98% of the protein is in its to.\ic form. However, when you raise the temperature to 320 �.. you find that only 10% of the protein is in its toxic form. Calculate the equilibrium constants for the T to N conversion at these two temperatures. Use the data to determine the H,S, and G for this process.arrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. Assessing the Cross-Overs of Flavodoxin For flavodoxin (pdb id = 5NLL), identify (he right-handed cross-overs and the left-handed cross-overs in the parallel -sheet.arrow_forward
- Answers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. Use examples from the ActiveModel for Human GaleLtin-1 to describe the hydrophobic effect.arrow_forwardAnswers to all problems are at the end οΓthis book. Detailed solutions are available in the Student Solutions Manual. Study Guide, and Problems Book. Enzymes and Y in the figure are both protein-digesting enzymes found in humans. Where would they most likely be at work? X is found in the mouth, Y in the small intestine. X in the small intestine. Y in the mouth. X in the stomach. Y in the small intestine. X in the small intestine. Y in the stomach.arrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. The Strength of Weak Forces Determines the Environmental Sensitivity of Living Cells Why does the central role of weak forces in biomolecular interactions restrict living systems to a narrow range of environ¬mental conditions? (Section 1.4)arrow_forward
- Answers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. Solving the Sequence of an Oligopeptide From Sequence Analysis Data Amino acid analysis of a decapeptide revealed the presence of the following products: The following facts were observed: Neither car boxy peptidase A nor B treatment of the- decapeptide had any effect. Trypsin treatment yielded two tetrapcptides and free Lys. Clostripain treatment yielded a tetrapcptide and a hexapeptidc. Cyanogen bromide treatment yielded an octapeptide and a dipeptide of sequence NP (using the one-letter codes). Chymotrypsin treatment yielded two tripeptides and a telrapeptide. The N-terminal chymotryptic peptide had a net charge of — 1 at neutral pi I and a net charge of —3 al pH 12. One cycle of Ed man degradation gave the PTH derivative What is the ammo acid sequence of this decapeptide?arrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. Oligonucleotide Structure Draw the chemical structure of pACG.arrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. Evaluating Organic Secretions of Trees James. G. Watt, Secretary of the Interior (1981-1983) in Ronald Reagans first term, provoked substantial controversy by slating publicly that trees cause significant amounts of air pollution. Based on your reading of this chapter, evaluate Watt's remarks.arrow_forward
- BiochemistryBiochemistryISBN:9781305577206Author:Reginald H. Garrett, Charles M. GrishamPublisher:Cengage Learning