Hydrogen peroxide (H2O2) is a toxic chemical (waste product) that is produced when our bodies break down aminoacids and complete other important metabolic reactions. Catalase is an enzyme found in our livers that is responsiblefor the decomposition (break down) of hydrogen peroxide into the harmless compounds of water and oxygen. Dueto the enzyme's action, the cells in our bodies are able to rid themselves of the harmful H2O2 waste product. Withoutthe catalase enzyme, many of our cells would be damaged by the increased amount of H2O2. When the enzyme isworking, oxygen gas bubbles will be released. The chemical reaction that occurs is the following:catalase2H2O2→ 2H,O + O2Students in biology class performed an experiment to test the activity of catalase at different pH levels. The diagrambelow represents the students’ results.IIIIIIIVVbubbles of.oxygen gaspiece ofliver containingcatalaseStronglyAcidic SolutionWeaklyAcidicSolutionStronglyBasic SolutionWeaklyBasicSolutionwith Neutral pH(Low pH)(High pH)Solution 3. Based on the diagrams, which statement best supports the students' observations?A Exposing catalase to extremely high pH yields high enzyme activity.B Exposing catalase to extremely low pH yields no enzyme activity.OExposing catalase to neutral pH yields no enzyme activity.D Exposing catalase to a pH below 2 or above 10 yields maximum enzyme activity.

pH is a very important criteria for determining the activity of an enzyme because an enzyme only…

Answered: working, oxygen gas bubbles will be…

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter10: From Proteins To Phenotypes

Section: Chapter Questions

Problem 16QP: The normal enzyme required for converting sugars into glucose is present in cells, but the...

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Hydrogen peroxide (H2O2) is a toxic chemical (waste product) that is produced when our bodies break down amino acids and complete other important metabolic reactions. Catalase is an enzyme found in our livers that is responsible for the decomposition (break down) of hydrogen peroxide into the harmless compounds of water and oxygen. Due to the enzyme's action, the cells in our bodies are able to rid themselves of the harmful H2O2 waste product. Without the catalase enzyme, many of our cells would be damaged by the increased amount of H2O2. When the enzyme is working, oxygen gas bubbles will be released. The chemical reaction that occurs is the following: catalase 2H2O2 → 2H,O + O2 Students in biology class performed an experiment to test the activity of catalase at different pH levels. The diagram below represents the students’ results. I II III IV V bubbles of. oxygen gas piece of liver containing catalase Strongly Acidic Solution Weakly Acidic Solution Strongly Basic Solution Weakly…
Antioxidants such as ascorbic acid (vitamin C) or vitamin E play a critical protective role in the body. These compounds are thought to "scavenge" free radicals produced in the body before they are able to cause damage. In this process, the antioxidant is oxidized, transforming the free radical into a less reactive species that is eliminated from the body. Ascorbic acid undergoes chemically reversible oxidation to dehydroascorbic acid. Suggest a method that will accurately determine the number of electrons involved in this oxidation. Be specific as to what you will measure and how you will relate it to the number of electrons involved in this oxidation
The active (catalytic) site of an enzyme contains the side chains of amino acid residues that areconserved because they participate in the protein’s catalytic activity. The bulk of the enzyme,however, is not part of the active site. A substantial amount of energy is required to synthesizeenzymes. Why are these molecules so large?
Cellular respiration is a process that produces usable energy for cells in the form of adenosine triphosphate. The presence or absence of oxygen determines the metabolic pathway that a cell undergoes for producing adenosine triphosphate. Describe the metabolic pathways that occur for cells in the presence of oxygen.
I have a project to construct a poster with the pathways that we have discussed in class which include glycolysis to beta-oxidation of fatty acids that are depicted inside a cell. I need to include reactions that are regulated, ones that produce or consume energy, and those at branch points between pathways. I also need a list of regulated enzymes and what regulates them. I also need to include intracellular membranes and locate reactions in the appropriate subcellular location. I can only include each metabolite once per subcellular location and include transporters. Any information that can be given to me on the different pathways and reactions would be helpful. I am at a loss and could use some help figuriong out what to put on my project. Thank you
As biological catalysts, enzymes play a fundamental role in many cellular processes. Which of the following statements about enzymes is correct? 1. Enzymes are essential for anabolic pathways; they are not required for catabolic pathways. 2. While an increase in temperature can increase the rate of an uncatalyzed reaction, it can’t increase the rate of an enzyme-catalyzed reaction. 3. Enzymes force substrates into unique conformations that do not occur in the absence of an enzyme. 4. Enzymes decrease the free energy of a reaction’s transition state. A. 1, 2 and 3 B. 1 and 3 C. 2 and 4 D. 4 only E. All of 1, 2, 3 and 4 are correct
Streptokinase is an enzyme produced by Streptococci bacteria and is used to digest fibrin clots. It is therefore very effective at eliminating blood clots that cause heart attacks and strokes. Why does a physician not worry that injecting streptokinase will also destroy healthy tissue in their patients? – this answer should discuss the specificity of enzymes for their substrates, defined by the shape of the active site.
The enzyme catalase is found in beef liver. This enzyme is responsible for the rapid breakdown of hydrogen peroxide to water and oxygen. When the catalase in the liver works properly, the speedy release of O2 and H2O will cause a foaming effect. When the enzyme activity increases, there is more foaming, and when the enzyme activity decreases, there is less foaming. If the enzyme becomes denatured, there will be no foaming.
The oxidation of sugar molecules by the cell takes place according to the general reaction C6H12O6 (glucose) + 6O2 → 6CO2 + 6H2O + energy. which of the following statements are correct? explain your answers. all of the energy produced is in the form of heat. none of the produced energy is in the form of heat. The energy is produced by a process that involves the oxidation of carbon atoms. The reaction supplies the cell with essential water. in cells, the reaction takes place in more than one step. many steps in the oxidation of sugar molecules involve reaction with oxygen gas. some organisms carry out the reverse reaction. some cells that grow in the absence of O2 produce CO2.
A hypothetical three-step metabolic pathway consists of intermediates W, X, Y, and Z and enzymes A, B, and C. Deduce the order of the enzymatic steps in the pathway from the following information: 1. Compound Q, a metabolic inhibitor of enzyme B, causes Z to build up. 2. A mutant in enzyme C requires Y for growth. 3. An inhibitor of enzyme A causes W, Y, and Z to accumulate. 4. Compound P, a metabolic inhibitor of enzyme C, causes W and Z to build up.
When lead acts as a poison, it can do so either by replacing another ion (such as zinc) in the active site of an enzyme or by reacting with cysteine side chains to form covalent bonds. Which of these is irreversible and why? Match the items in the left column to the appropriate blanks in the sentences on the right. Reset Help a covalent bond When occurs between the active site (containing cystein) and the inhibitor (lead), replacement of an ion the substrate is excluded or the catalytic reaction is blocked. an ionic bond When occurs and the inhibitor (lead) replaces another ion. reaction with side chains The is an example of a permanent, irreversible change. ion exchange The is an example of a change that can be reversed.
CH₂OH 애 H2COPO 2- ATP OH 1 애 애 어 애 The class of the enzyme catalyzing the reaction shown in this figure is a(n) Choose the one best answer. ligase 매 +ADP 매

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