
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: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 23, Problem 23.17P
7 A bacterial enzyme has the following temperature-dependent activity.
(a) Is this enzyme more or less active at normal body temperature than when a person has a fever?
(b) What happens to the enzyme activity if the patient’s temperature is lowered to 35°C?
Expert Solution & Answer

Trending nowThis is a popular solution!

Students have asked these similar questions
(a) Write down the structure of EDTA molecule and show the complex structure with Pb2+ . (b) When do you need to perform back titration? (c) Ni2+ can be analyzed by a back titration using standard Zn2+ at pH 5.5 with xylenol orange indicator. A solution containing 25.00 mL of Ni2+ in dilute HCl is treated with 25.00 mL of 0.05283 M Na2EDTA. The solution is neutralized with NaOH, and the pH is adjusted to 5.5 with acetate buffer. The solution turns yellow when a few drops of indicator are added. Titration with 0.02299 M Zn2+ requires 17.61 mL to reach the red end point. What is the molarity of Ni2+ in the unknown?
A compound has the molecular formula CH40, and shows a strong IR absorption at 2850-3150 cm. The following signals appear in the 'H NMR
spectrum: 1.4 ppm (triplet, 6H), 4.0 ppm (quartet, 4H), 6.8 ppm (broad singlet, 4H).
Which of the following structures is consistent with these data? Select the single best answer.
OCH CH₂
x
OCH2CH3
CH₂OCH3
OH
CH₂OCH
OH
CH, OCH₁
CH₂OCH,
CH₂OCH
HO
OH
°
CH₂OCH3
predict the major product while showing me the intermidiate products from each reagent/reagent group
Chapter 23 Solutions
Introduction to General, Organic and Biochemistry
Ch. 23 - What is the difference between a catalyst and an...Ch. 23 - What are ribozymes made of?Ch. 23 - Would a lipase hydrolyze two triglycerides, one...Ch. 23 - Compare the activation energy in uncatalyzed...Ch. 23 - Prob. 23.5PCh. 23 - Prob. 23.6PCh. 23 - Prob. 23.7PCh. 23 - Monoamine oxidases are important enzymes in brain...Ch. 23 - Prob. 23.9PCh. 23 - 0 What kind of reaction does each of the following...
Ch. 23 - Prob. 23.11PCh. 23 - Prob. 23.12PCh. 23 - 3 What is the difference between reversible and...Ch. 23 - Prob. 23.14PCh. 23 - 5 At a very low concentration of a certain...Ch. 23 - 6 If we wish to double the rate of an...Ch. 23 - 7 A bacterial enzyme has the following...Ch. 23 - 8 The optimal temperature for the action of...Ch. 23 - 9 The activity of pepsin was measured at various...Ch. 23 - Prob. 23.20PCh. 23 - Prob. 23.21PCh. 23 - Prob. 23.22PCh. 23 - Prob. 23.23PCh. 23 - 4 What kind of chemical reaction occurs most...Ch. 23 - 5 Which of the following is a correct statement...Ch. 23 - Prob. 23.26PCh. 23 - 7 Enzymes are long protein chains, usually...Ch. 23 - Prob. 23.28PCh. 23 - Prob. 23.29PCh. 23 - 0 Can the product of a reaction that is part of a...Ch. 23 - 1 What is the difference between a zymogen and a...Ch. 23 - 2 The enzyme trypsin is synthesized by the body in...Ch. 23 - Prob. 23.33PCh. 23 - Prob. 23.34PCh. 23 - Prob. 23.35PCh. 23 - Prob. 23.36PCh. 23 - Prob. 23.37PCh. 23 - Prob. 23.38PCh. 23 - 9 The enzyme phosphofructokinase (PFK) (Chapter...Ch. 23 - Prob. 23.40PCh. 23 - 1 After a heart attack, the levels of certain...Ch. 23 - Prob. 23.42PCh. 23 - Prob. 23.43PCh. 23 - Prob. 23.44PCh. 23 - 5 Chemists who have been exposed for years to or...Ch. 23 - 6 Which enzyme preparation is given to patients...Ch. 23 - 7 Chymotrypsm is secreted by the pancreas and...Ch. 23 - 8 Explain why transition-state analogs are potent...Ch. 23 - Prob. 23.49PCh. 23 - 0 Explain the relationship between...Ch. 23 - 1 (Chemical Connections 23A) Acetylcholine causes...Ch. 23 - Prob. 23.52PCh. 23 - Prob. 23.53PCh. 23 - Prob. 23.54PCh. 23 - Prob. 23.55PCh. 23 - 6 (Chemical Connections 23C) What role does Mn2+...Ch. 23 - 7 (Chemical Connections 23C) Which amino acids of...Ch. 23 - 8 (Chemical Connections 23D) What is the strategy...Ch. 23 - 9 (Chemical Connections 23D) Why did scientists...Ch. 23 - Prob. 23.60PCh. 23 - Prob. 23.61PCh. 23 - Prob. 23.62PCh. 23 - 3 (Chemical Connections 23E) What is the...Ch. 23 - Prob. 23.64PCh. 23 - Prob. 23.65PCh. 23 - Prob. 23.66PCh. 23 - Prob. 23.67PCh. 23 - Prob. 23.68PCh. 23 - Prob. 23.69PCh. 23 - Prob. 23.70PCh. 23 - 1 Food can be preserved by inactivation of enzymes...Ch. 23 - Prob. 23.72PCh. 23 - 3 Would you expect to find active digestive...Ch. 23 - Prob. 23.74PCh. 23 - Prob. 23.75PCh. 23 - Prob. 23.76PCh. 23 - 7 An enzyme has the following pH dependence: At...Ch. 23 - Prob. 23.78PCh. 23 - Prob. 23.79PCh. 23 - 0 Nerve gases operate by forming covalent bonds at...Ch. 23 - 1 What would be the appropriate name for an enzyme...Ch. 23 - Prob. 23.82PCh. 23 - 3 A liver enzyme is made of four subunits: 2A and...Ch. 23 - Prob. 23.84PCh. 23 - Prob. 23.85PCh. 23 - Prob. 23.86PCh. 23 - Prob. 23.87PCh. 23 - Prob. 23.88PCh. 23 - Prob. 23.89PCh. 23 - Prob. 23.90PCh. 23 - Prob. 23.91P
Knowledge Booster
Learn more about
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
- Why is it desirable in the method of standard addition to add a small volume of concentrated standard rather than a large volume of dilute standard? An unknown sample of Cu2+ gave an absorbance of 0.262 in an atomic absorption analysis. Then 1.00 mL of solution containing 100.0 ppm (= µg/mL) Cu2+ was mixed with 95.0 mL of unknown, and the mixture was diluted to 100.0 mL in a volumetric flask. The absorbance of the new solution was 0.500. Calculate the concentration of copper ion in the sample.arrow_forwardWhat is the relation between the standard deviation and the precision of a procedure? What is the relation between standard deviation and accuracy? The percentage of an additive in gasoline was measured six times with the following results: 0.13, 0.12, 0.16, 0.17, 0.20, 0.11%. Find the 90% and 99% confidence intervals for the percentage of the additive.arrow_forwardIf you measure a quantity four times and the standard deviation is 1.0% of the average, can you be 90% confident that the true value is within 1.2% of the measured average?arrow_forward
- Write down three most common errors in thermogravimetric analysis. Identify them as systematic or random errors and discuss how you can minimize the errors for better results.arrow_forwarda) A favorable entropy change occurs when ΔS is positive. Does the order of the system increase or decrease when ΔS is positive? (b) A favorable enthalpy change occurs when ΔH is negative. Does the system absorb heat or give off heat when ΔH is negative? (c) Write the relation between ΔG, ΔH, and ΔS. Use the results of parts (a) and (b) to state whether ΔG must be positive or negative for a spontaneous change. For the reaction, ΔG is 59.0 kJ/mol at 298.15 K. Find the value of K for the reaction.arrow_forwardA sample of hydrated magnesium sulfate (MgSO4⋅xH2O) is analyzed using thermogravimetric analysis (TGA). The sample weighs 2.50 g initially and is heated in a controlled atmosphere. As the temperature increases, the water of hydration is released in two stages: (a) The first mass loss of 0.72 g occurs at 150°C, corresponding to the loss of a certain number of water molecules. (b) The second mass loss of 0.90 g occurs at 250°C, corresponding to the loss of the remaining water molecules. The residue is identified as anhydrous magnesium sulfate (MgSO4) Questions: (i) Determine the value of x (the total number of water molecules in MgSO4⋅xH2O) (ii) Calculate the percentage of water in the original sample. Write down the applications of TGA.arrow_forward
- The solubility product of iron(III) hydroxide (Fe(OH)3) is 6.3×10−38. If 50 mL of a 0.001 M FeCl3 solution is mixed with 50 mL of a 0.005 M NaOH solution, will Fe(OH)3 precipitate? Show all step-by-step calculations. To evaluate the equilibrium constant, we must express concentrations of solutes in mol/L, gases in bars, and omit solids, liquids, and solvents. Explain why.arrow_forwardPredict the major products of this organic reaction.arrow_forward2. Provide the structure of the major organic product in the following reaction. Pay particular attention to the regio- and stereochemistry of your product. H3CO + H CN Aarrow_forward
- Predict the major products of the following organic reaction.arrow_forward1) The isoamyl acetate report requires eight paragraphs - four for comparison of isoamyl alcohol and isoamyl acetate (one paragraph each devoted to MS, HNMR, CNMR and IR) and four for comparison of acetic acid and isoamyl acetate ((one paragraph each devoted to MS, HNMR, CNMR and IR. 2) For MS, the differing masses of molecular ions are a popular starting point. Including a unique fragmentation is important, too. 3) For HNMR, CNMR and IR state the peaks that are different and what makes them different (usually the presence or absence of certain groups). See if you can find two differences (in each set of IR, HNMR and CNMR spectra) due to the presence or absence of a functional group. Include peak locations. Alternatively, you can state a shift of a peak due to a change near a given functional group. Including peak locations for shifted peaks, as well as what these peaks are due to. Ideally, your focus should be on not just identifying the differences but explaining them in terms of…arrow_forwardWhat steps might you take to produce the following product from the given starting material? CI Br Он до NH2 NH2arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Introductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage LearningGeneral, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningOrganic And Biological ChemistryChemistryISBN:9781305081079Author:STOKER, H. Stephen (howard Stephen)Publisher:Cengage Learning,
- Chemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher:Cengage LearningWorld of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage LearningWorld of ChemistryChemistryISBN:9780618562763Author:Steven S. ZumdahlPublisher:Houghton Mifflin College Div

Introductory Chemistry: A Foundation
Chemistry
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning

General, Organic, and Biological Chemistry
Chemistry
ISBN:9781285853918
Author:H. Stephen Stoker
Publisher:Cengage Learning

Organic And Biological Chemistry
Chemistry
ISBN:9781305081079
Author:STOKER, H. Stephen (howard Stephen)
Publisher:Cengage Learning,

Chemistry for Today: General, Organic, and Bioche...
Chemistry
ISBN:9781305960060
Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher:Cengage Learning

World of Chemistry, 3rd edition
Chemistry
ISBN:9781133109655
Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Publisher:Brooks / Cole / Cengage Learning

World of Chemistry
Chemistry
ISBN:9780618562763
Author:Steven S. Zumdahl
Publisher:Houghton Mifflin College Div
DIGESTER-35 | VITAMINS AND THEIR RELATED COENZYMES| GPAT | NIPER | PHARMACIST| DI; Author: GPAT DISCUSSION CENTER;https://www.youtube.com/watch?v=CGrdNYmho0s;License: Standard YouTube License, CC-BY