Prescott's Microbiology
10th Edition
ISBN: 9781259281594
Author: Joanne Willey, Linda Sherwood Adjunt Professor Lecturer, Christopher J. Woolverton Professor
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 10.7, Problem 2MI
Figure 10.21 Feedback Inhibition. Feedback inhibition in a branching pathway with two end products. The branch-point enzymes, those catalyzing the conversion of intermediate E to F and G, are regulated by feedback inhibition. Products P and Q also inhibit the initial reaction in the pathway. A colored line with a minus sign at one end indicates that an end product, P or Q, is inhibiting the enzyme catalyzing the step next to the minus.
What would happen to product formation if P and Q inhibited the formation of intermediate E independently of one another?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Od. Vitamin B2
s page
Hexokinase catalyzes phosphorylation of glucose to clucose-6-phosphate, where ATP is used as a donor of phosphate group, this
an example of:
Select one:
NAVIGATION
a. Oxidoreductase
b. Ligase
c. Lyase
d. Transferase
Next page
multiple choice, choose the correct answer
Under which of the following conditions would an enzyme fail to be accurately described by the M-M equation:1. kcat >> k1 or k-12. In the presence of a negative allosteric effector3. At low concentrations, the reaction is first order with respect to substrate concentration4. At high concentrations the reaction is zero order with respect to substrate
Why would an enzyme no longer function once it denatures?
Chapter 10 Solutions
Prescott's Microbiology
Ch. 10.1 - Figure 10.2 The Relationship of G to the...Ch. 10.1 - What kinds of work are carried out in a cell?...Ch. 10.1 - What is thermodynamics? Summarize the first and...Ch. 10.1 - Define entropy and enthalpy. Do living cells...Ch. 10.1 - Prob. 4RIACh. 10.1 - Prob. 5RIACh. 10.2 - Why is ATP called a high-energy molecule? How is...Ch. 10.2 - Describe the energy cycle and ATPs role in it....Ch. 10.3 - Prob. 1MICh. 10.3 - Prob. 2MI
Ch. 10.4 - Figure 10.6 Electron Movement and Reduction...Ch. 10.4 - How is the direction of electron flow between...Ch. 10.4 - When electrons flow from the NAD+/NADH conjugate...Ch. 10.4 - Which among the following would be the best...Ch. 10.4 - In general terms, how is G related to E0? What is...Ch. 10.4 - Name and briefly describe the major electron...Ch. 10.6 - Will an enzyme with a relatively high Km have a...Ch. 10.6 - Prob. 2MICh. 10.6 - What is an apoenzyme? A holoenzyme? What are the...Ch. 10.6 - Illustrate the effect enzymes have on the...Ch. 10.6 - How does enzyme activity change with substrate...Ch. 10.6 - What special properties might an enzyme isolated...Ch. 10.6 - What are competitive and noncompetitive...Ch. 10.6 - How are enzymes and ribozymes similar? How do they...Ch. 10.7 - Figure 10.19 Allosteric Regulation. The structure...Ch. 10.7 - Figure 10.21 Feedback Inhibition. Feedback...Ch. 10.7 - Briefly describe the three ways a metabolic...Ch. 10.7 - Define the terms metabolic channeling and...Ch. 10.7 - Define allosteric enzyme and allosteric effector.Ch. 10.7 - Prob. 4RIACh. 10.7 - Prob. 5RIACh. 10.7 - What is the significance of the fact that...Ch. 10 - Examine the structures of macromolecules in...Ch. 10 - Most enzymes do not operate at their biochemical...Ch. 10 - Examine the branched pathway shown here for the...Ch. 10 - Prob. 4CHI
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Only typed explanationarrow_forwardPart A: Say that a cell is running a metabolic pathway that follows the same pattern as the diagram and something happens that prevents enzyme 3 from reacting normally. Of the following options, which one is the end result of this interrupted metabolic pathway? Part B: for this reaction to be an example of feedback inhibition, the ____ would have to be blocking enzyme 3. Answer choices: • pH • Product • Salinityarrow_forwardAllosteric regulation O The product of a series of reactions acts as an inhibitor for an earlier reaction. O Hormones control the synthesis of enzymes. A regulator binds to the enzyme at a site other than the active site. This binding changes the shape of the enzyme and alters the catalytic ability of the enzyme. An inhibitor binds reversibly to the enzymesubstrate complex, blocking the binding of the second substrate to the active site. The activity of an enzyme is influenced by the addition or removal of a group that is covalently bonded to the enzyme. O An inhibitor forms covalent bonds to the active site. permanently blocking it.arrow_forward
- Modified TRUE or FALSE. Write the word TRUE if the statement is correct. If the statement is false, write the incorrect underlined word/s and indicate the correct word/s to make the statement true. Feedback inhibition occurs when the end products of the metabolic pathways inhibit the enzymes involved in earlier steps.arrow_forwardMAKE A GRAPH FOR ME ON GRAPH PAPER CALL IT ENZYMES VS RATE OF REACTION USING TABLE BELOW GRAPH paper INSERTED BELOW rules: data points must be an x or circled dot, must be on grid paper , the independant variable on the x axis and dependant variable on the y axis, must include titles Regarding the data points: - H2O2 + MnO2 Control #1: (Control #1, 5)- H2O2 + sand control #2: (Control #2, 0)- Plant versus Animal Liver Catalase: (Liver, 4)- Potato: Plant vs. Animal Catalase: (Potato, 3)- Substance Enzyme Concentration (Used Liver): (Liver Used, 4)- Substance Enzyme Concentration (Used H2O2): (Used H2O2, 1) - Boiling Water Bath Temperature: (Boiling Water Bath, 5)- Ice Water Bath Temperature: (Ice Water Bath, 2)- HCl, or pH 3: (H 3, 4)- NaOH at pH 12: (pH 12, 2)- pH 7 (H2O): (assuming average of pH readings; pH 7, not specified) The following explains how to display the graph: Title: Factors versus Enzyme Activity Rate - Labels on X- and Y-axes: Factors and Rate of Enzyme…arrow_forwardFill the blank with the option below The substrate concentration at which an enzyme-catalyzed reaction proceeds at on-half its maximum velocity The rate enhancement of the enzyme catalyzed reaction over uncatalyzed reaction The rate of the reaction when the concentration of the products is zero and the reverse rate is negligible The rate at which the enzyme-substrate complex is formed The number of time an enzyme molecule transforms a substrate molecule per unit of time The proportionality constant that relates the velocity of a chemical reaction to the concentrations of the reactants The maximum velocity of an enzymatic reaction when the binding site is saturate with substrate A measure of the catalytic activity of an enzyme at low concentrations of substrate The rate constant for the equilibrium between the reactants and the enzyme-substrate complex 1. Vo 2. 4. 3. V₁ Acronym Parameter 6. 7. I 5. Km 8. 1 I 9. AAG 10. AG rate constant rate of disappearance I specificity constant…arrow_forward
- Consider the enzyme, ATCase. All are true except: It's K effectors are ATP and CTP It is a K system enzyme. Plots of V versus [S] are sigmoidal Plots of 1/V versus 1/[S] are sigmoidal.arrow_forwardNumber 4 pleasearrow_forwardMatch with the given reactionA. The reaction that is slowest in reacting with the enzymeB. The reaction that is fastest in reacting with the glucose oxidaseC. The reaction that is most fitted in the active site of the enzymearrow_forward
- In full details. Define 'activation energy' of an enzyme catalysed single substrate reaction and mention the effects of an enzyme on this energy.arrow_forwardGraph B above depicts Lineweaver-Burk double reciprocal plot for an enzyme catalyzed reaction carried out in the presence or absence of an inhibitor. Which of the following statement best describes the kinetic data shown below: ? Line 1 depicts the enzyme-catalyzed reaction carried out in the presence of a competitive inhibitor. Line 1 depicts the enzyme-catalyzed reaction carried out in the presence of a noncompetitive inhibitor. Line 2 depicts the enzyme-catalyzed reaction carried out in the presence of a competitive inhibitor. Line 2 depicts the enzyme-catalyzed reaction carried out in the presence of a noncompetitive inhibitor.arrow_forwardFill in blanks with increased decreases or levels offarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Anaerobic Respiration; Author: Bozeman Science;https://www.youtube.com/watch?v=cDC29iBxb3w;License: Standard YouTube License, CC-BY