Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 6, Problem 3FIB
Summary Introduction
Introduction:
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Here is a chemical reaction: H₂O2 -> O2 + H₂O
What is/are the reactants? What is/are the products?
H₂O2 is the product while O₂ and H₂O are reactants.
There are no products or reactants as an enzyme is needed for the reaction to
occur.
There are no products or reactants as O2 and H₂O occur in the environment.
O H₂O2 is the reactant while O₂ and H₂O are products
Which of the following is correct regarding enzymes?
Enzymes can speed up the rate of reaction by shifting the equilibrium of the reaction
forward.
Enzymes can make a nonspontaneous reaction spontaneous.
Most enzymes are made up of DNA and RNA and are named based on the reaction that they
catalyze.
Enzymes can increase the rate of a reaction, but do not shift the equilibrium of a reaction.
What is a key characteristic of exergonic reactions?
They consume energy.
They require glucose fusion.
Their products have more energy than the reactants.
They release energy that can be used by cells.
They involve the formation of bonds.
Chapter 6 Solutions
Biology
Ch. 6.1 - Prob. 1TCCh. 6.1 - Energy Unleashed Much like a cars engine, the...Ch. 6.1 - define energy and work?Ch. 6.1 - define potential energy and kinetic energy and...Ch. 6.1 - State and explain the first and second laws of...Ch. 6.2 - Is glucose breakdown endergonic or exergonic? What...Ch. 6.2 - Prob. 1CSCCh. 6.2 - describe how energy is captured and released by...Ch. 6.2 - explain exergonic and endergonic reactions and...Ch. 6.2 - explain activation energy?
Ch. 6.3 - Prob. 1TCCh. 6.3 - In hope of reducing plastic waste, some towns and...Ch. 6.3 - name and describe two important energy-carrier...Ch. 6.3 - explain coupled reactions?Ch. 6.4 - Can an enzyme catalyst make an endergonic reaction...Ch. 6.4 - You may have seen the almost magical glow of...Ch. 6.4 - explain how catalysts reduce activation energy?Ch. 6.4 - explain how enzymes function as biological...Ch. 6.5 - Health Watch Lack of an Enzyme Leads to Lactose...Ch. 6.5 - describe how cells regulate the rate at which...Ch. 6.5 - explain how poisons, drugs, and environmental...Ch. 6.5 - Prob. 2TCCh. 6 - Which of the following is True? a. Enzymes...Ch. 6 - Prob. 2MCCh. 6 - Prob. 3MCCh. 6 - Prob. 4MCCh. 6 - Prob. 5MCCh. 6 - Prob. 1FIBCh. 6 - Prob. 2FIBCh. 6 - Prob. 3FIBCh. 6 - Prob. 4FIBCh. 6 - Prob. 5FIBCh. 6 - Prob. 6FIBCh. 6 - Prob. 1RQCh. 6 - Prob. 2RQCh. 6 - Prob. 3RQCh. 6 - Prob. 4RQCh. 6 - Prob. 5RQCh. 6 - Prob. 6RQCh. 6 - Prob. 7RQCh. 6 - While vacuuming, you show off by telling a friend...Ch. 6 - Refute the following: According to evolutionary...Ch. 6 - Can a bear use all the energy contained in the...
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Similar questions
- Use the following graph to diagram the energetics of a chemical reaction, with and without an enzyme. Be sure to position reactants and products at appropriate points and to indicate the stages in the reaction and the energy levels.arrow_forwardDiagrams like the one below are used to represent exothermic reactions. For instance, consider burning charcoal (which almost entirely pure element carbon). A=carbon and B=oxygen, when they react they form C=carbon dioxide. A little chemistry vocab: does substance C in the diagram represent a reactant or the product? Activation Energy A+B Reaction Progression Energyarrow_forwardWhich of the following describe(s) an exergonic reaction? energy is released non-spontaneous energy is absorbed spontaneousarrow_forward
- Why is an input of energy needed for all chemical reactions?arrow_forwardEnzymes are key components in biological reactions. Which of the following statements about enzyme function in biological systems is FALSE? Enzymes are key components in biological reactions. Which of the following statements about enzyme function in biological systems is FALSE? Enzymes increase the rate of a reaction, but do not change the free energy of a reaction. Enzymes frequently work in metabolic pathways, such that the activity of one enzyme can affect the activity of a second enzyme in the pathway by altering the concentration of a substrate or product of the second enzyme. Enzymes will alter the equilibrium of a reaction such that the enzyme increases the exergonic reaction relative to the endergonic reaction. Even if the enzyme forms a bond with a substrate during a reaction, the enzyme returns to its original form at the end of the reaction.arrow_forwardThe energy in organic molecules is released in a series of steps rather than a single step because: the amount of energy released would be too much to capture in one reaction. more total energy is released in multiple steps than would be released in a single step. less total energy is released in multiple steps than would be released in a single step. it is not possible to release it in a single step. only a single electron can be moved at a time in a cellular reaction. Incorrectarrow_forward
- “Enzyme increases the rate of a reaction by lowering the activation energy. In doing so, it also changes the equilibrium of that reaction.” Do you agree/disagree with this statement? And why?arrow_forwardWhich of the following is/are TRUE of an enzyme? Enzymes lower the release of free energy Enzymes are not consumed in a reaction Not all enzymes are proteins Enzymes only affect endergonic reactions Enzymes only affect exergonic reactionsarrow_forwardIn the diagram, notice the y-coordinate (energy) of A + B; also notice how C is at a lower y-coordinate. Their difference is the amount of energy during the exothermic reaction. A+B Activation Energy Reaction Progression Energyarrow_forward
- Which of the following statements is NOT true? Enzymes increase the probability that a chemical reaction will take place by lowering the activation energy The energy required to cause a chemical reaction to occur is called the activation energy Chemical reactions in living cells are catalyzed by enzymes None of the other four answers (all are true) Decomposition (degradation, catabolic) reactions are usually endergonicarrow_forwardFor a reaction to be spontaneous, which of the following factors should have a negative sign? A Enthalpy and A Entropy A Temperature A Gibbs Free Energy and A Enthalpy AGibb's Free Energy, AEnthalpy and A Entropy Sellarrow_forwardOxidation is the __________ of electrons which results in a ___________ of energy, whereas Reduction is the __________ of electrons which results in a ___________ of energy.arrow_forward
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