Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Textbook Question
Chapter 41.3, Problem 1CS
Core Skill: Connections Can negative feedback occur at levels other than the organ system level shown in this figure? Refer back to Figure 6.13 for help.
Feedback inhibition. In this process, the final product of a
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Directions: This short free-response question requires about 6 minutes to answer. The question is worth 3 points. Read the question carefully and completely. Answers must be written
out in paragraph form. Outlines, bulleted lists, or diagrams alone are not acceptable.
II
Substrate Concentration [S]
The graph above shows the initial rate of an enzyme-catalyzed reaction at different substrate concentrations in the presence of a constant concentration of the enzyme.
Connect the primary structure of the enzyme to its overall shape.
I U
x X2 5
Initial Rate of Reaction
Relating to bioenergics:
d. The free energy change for a reaction does not depend on the concentrations of substrates and products. True or False?e. All processes in animal cells are at equilibrium. True or False?f. All pathways that occur in the cell are overall exergonic. True or False?
Background:
In this experiment, the lab instructor created a catecholase enzyme solution using white potatoes. The potato was the source of enzymes and cofactors in the experiment, as potatoes have sufficient amounts of catecholase and, therefore, cofactors for catecholase.
A chilled potato had the peel removed by the instructor and then was chopped into pieces. The potato is peeled so that the brown skin does not interfere with the brown color of the benzoquinone. If this were to occur, the absorbance would seem higher due to the brown potato skin in the solution. The potato was chopped so that the blender did not need to work as hard to break open the cells. The instructor then placed the chopped, peeled potato into a chilled blender. The blender is chilled as heat will speed up the rate of reaction. Cold (chilled) distilled water was then added to the potatoes. This was done to break open the cells of the potato. The catecholase and cofactors are inside the potato cells; water is…
Chapter 41 Solutions
Biology
Ch. 41.1 - Core Skill: Modeling The goal of this modeling...Ch. 41.1 - Prob. 2CSCh. 41.2 - Prob. 1CCCh. 41.3 - Core Skill: Connections Can negative feedback...Ch. 41.3 - What similar feedforward process might occur in an...Ch. 41.4 - Prob. 1CCCh. 41.4 - Prob. 2CCCh. 41.4 - Prob. 3CCCh. 41.4 - Prob. 4CCCh. 41.4 - What symptoms are sometimes seen in athletes after...
Ch. 41.4 - Prob. 2EQCh. 41.4 - Prob. 3EQCh. 41 - Prob. 1TYCh. 41 - Structures composed of two or more tissue types...Ch. 41 - Prob. 3TYCh. 41 - From an examination of the structure of many...Ch. 41 - Prob. 5TYCh. 41 - The folds, convolutions, or extensions found in...Ch. 41 - Prob. 7TYCh. 41 - Prob. 8TYCh. 41 - Prob. 9TYCh. 41 - Prob. 10TYCh. 41 - Prob. 1CQCh. 41 - Define homeostasis, and give examples of...Ch. 41 - Prob. 3CQCh. 41 - Prob. 1COQCh. 41 - Discuss the organization of animal bodies from the...
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- An enzyme facilitate catalysis by formation of ester bond with an alcoholic substrate. Which amino acid residues can facilitate such mechanism of catalysis? Select the correct response: Cys and Met Lys and Arg Ser and Tyr Glu and Asparrow_forwardfor us to know how different factors affect the functionality of enzymes. EFFECT ON REACTION RATE IF FACTORS IS EFFECT ON REACTION RATE IF FACTORS IS RAISED / INCREASED BRIEF EXPLANATION AS TO WHY THIS FACTOR AFFECT ENZYME FUNCTION AND FACTORS REDUCED / DECREASED REACTION RATES IN THAT WAY Enzyme Concentration Substrate Concentration Inhibitor Concentration Temperature GENERAL BIOLOGY 1 ARAN JAKE G. BARRAMEDA AUTHOR Page 3 of 6 SUBJECT Module 4arrow_forward(a) Lock and key model versus induced fit model of enzyme activity. (b) Competitive and non-competitive enzyme inhibitors. (c) Reversible and irreversible enzyme inhibitors.arrow_forward
- C. Number the following statements (1 to 13) according to the sequence of events, then identify whether the event happens during glycolysis (G), the transition step (T), the Krebs cycle (K) N or the respiratory chain (R). For example, if you think that the statement describes the fifth Carrow_forwardTherefore the role of the enzyme is to circle one: (regulate / speed up /inhibit) a reaction by circle one: (INCREASING / DECREASING) the Does the forward reaction require an input of cellular energy? circde one: (YES / NO) If yes, where does that energy come from? Does the forward reaction release energy? circle one: (YES / NO) If yes, what is that energy used to make? Is the activation energy provided by ATP circle one: (YES / NO). It is provided by physical strain on the bond from how the holds the c. The reverse reaction would be written as: Please select the correct letters from graph (a-e) to match the description for the reverse Activation energy without an enzyme. Activation energy with an enzyme. AG (change in free energy). reaction. Does the reverse reaction require an input of cellular energy (ATP) ? circle one: (YES / NO) If yes, where does that energy come from? Does the reverse reaction release energy? circle one: (YES / NO) If yes, what is that energy used to make?arrow_forwardEssay: 1. Your friend asks why some parents do not give milk to their children as a snack. What would you tell your friend? 2. Why is feedback inhibition important in the metabolic pathways?arrow_forward
- To examine: Whether the statement, "An enzyme reaches a maximum rate at high substrate concentration because it has a fixed number of active sites where substrate binds", is true or false.arrow_forward← ASSIGNMENT #1: 8% → с X M Inbox (13) - s23.shrilkuma X Untitled document - Goog X ✰ classroom.google.com/w/NTE5NDE3MTQ5MzUx/tc/NTE5NDE3MTQ5MzYO body needs them. • Discuss the major metabolic pathways assigned to your group. Include rate-limiting steps and enzymes, how many ATPs are produced, and which steps. Groups 1,4 and 7- Carbohydrate Groups 2,5 and 8 - Protein Groups 3,6 and 9 - Lipid (Fat) Use Google Doc format Type here to search A E C Paraphrasing Tool - QuillB X The paper should be 2-3 pages in length excluding the required class front page and reference page. b Answered: Discuss the ma x + H 21°C » ENG T 3:27 PM 2023-06-04 X : 2arrow_forwardThe effectiveness of allosteric effectors in regulating metabolic pathways is based on their ability to— interact with multiple substrate-binding sites on the target enzyme(s). interfere with competitive inhibitors. alter the concentration of the target enzyme(s). denature the target enzyme(s). change the conformation of the target enzyme(s).arrow_forward
- b. The forward reaction would be written as: Please select the correct letters from graph (a-e) to match the description for the forward Activation energy without an enzyme. Activation energy with an enzyme. AG (change in free energy). reaction 2 Therefore the role of the enzyme is to circle one: (regulate / speed up /inhibit) a reaction by circle one: (INCREASING / DECREASING) the Does the forward reaction require an input of cellular energy? circle one: (YES / NO) If yes, where does that energy come from? Does the forward reaction release energy? circle one: (YES / NO) If yes, what is that energy used to make?. Is the activation energy provided by ATP circle one: (YES/ NO). It is provided by physical strain on the bond from how the holds thearrow_forwardEssay: In your own words explain the following concept in not more than 5 sentences a. The lock and key model for enzyme activity b. Relationship of substrate and enzyme concentration to enzyme activity c. importance of blotting technology d. factors that can affect the donnan equilibriumarrow_forwardQ. Draw a diagram to explain the process of protein biosynthesis? Draw a neat and clean diagram on a paper with pencil either draw the diagram given or find a better one from Google and draw itarrow_forward
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