Biology: The Unity and Diversity of Life
15th Edition
ISBN: 9780357093795
Author: STARR
Publisher: CENGAGE LEARNING (CUSTOM)
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Chapter 5, Problem 4SQ
Summary Introduction
Introduction: Activation energy is the minimum amount of energy that is essential to start a reaction. Endergonic reaction describes the net input of free energy to proceed, while exergonic reaction describes the reaction that ends with a net release of free energy. Gibbs free energy for the exergonic reaction is negative and for endergonic reaction, it is positive. In a process called catalysis, the enzyme makes a reaction faster than its own. The enzyme remains unaffected in this reaction.
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Chapter 5 Solutions
Biology: The Unity and Diversity of Life
Ch. 5 - One Tough Bug The genus Ferroplasma consists of a...Ch. 5 - One Tough Bug The genus Ferroplasma consists of a...Ch. 5 - One Tough Bug The genus Ferroplasma consists of a...Ch. 5 - Which of the following statements is not correct?...Ch. 5 - ________ is lifes primary source of energy. a....Ch. 5 - Prob. 3SQCh. 5 - Prob. 4SQCh. 5 - Prob. 5SQCh. 5 - ______ are always changed by participating in a...Ch. 5 - Name one environmental factor that typically...
Ch. 5 - Prob. 8SQCh. 5 - A molecule that donates electrons becomes...Ch. 5 - All antioxidants ________. a. prevent other...Ch. 5 - Solutes tend to diffuse from a region where they...Ch. 5 - Prob. 12SQCh. 5 - A transport protein requires ATP to pump sodium...Ch. 5 - Immerse a human red blood cell in a hypotonic...Ch. 5 - Match each tern with its most suitable...Ch. 5 - Beginning physics students are often taught the...Ch. 5 - Describe diffusion in terms or entropy.Ch. 5 - What is a redox reaction?Ch. 5 - The enzyme trypsin is sold as a dietary...Ch. 5 - Catalase combines two hydrogen peroxide molecules...
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- Which two of the following apply to the products of an exergonic reaction? A. Have less energy than the reactants B. Are less ordered than the reactants C. Are more ordered than the reactants D. Have more energy than the reactantsarrow_forwardthe energy released by ___ reactions is used to run ________ reactions A. ENDERGONIC; ENDERGONIC B. EXERGONIC; ENDERGONIC C. EXERGONIC; EXERGONIC D. ENDERGONIC; EXERGONICarrow_forwardWhich of the following is true for all exergonic reactions? Group of answer choices A. The reactions are nonspontaneous B. A net input of energy from the surroundings is required for the reactions to proceed C. Some reactants will be converted to products D. The products have more total energy than the reactants E. The reaction proceeds with a net release of free energyarrow_forward
- Beginning physics students are often taught the basic concepts of thermodynamics with two phrases: First, you can never win. Second, you can never break even. Explain.arrow_forwardWhich of the following is not true about enzymes? a. They are consumed by the reactions they catalyze. b. They are usually made of amino acids. c. They lower the activation energy of chemical reactions. d. Each one is specific to the particular substrate(s) to which it binds.arrow_forwardA chemical reaction is more likely to occur spontaneously if A. the products of the reaction are more complex than the reactants. B. the system takes up heat from its surroundings. C. the products of the reaction are more disordered than the reactants. D. the system gains free energy.arrow_forward
- enzymes are efficient catalysts because they can do which of the following? A) catalyze reactions that ottherwise would not occur. B) decrease the free energy of activation of reactions, C) decrease the standard free energy change o reactions , D) prevent the conversion of product to substrate, E) shift the equilibrium of reactions toward more complete inversion of productarrow_forwardWhat is activation energy? a. The thermal energy associated with random movements of molecules b. The energy released through breaking chemical bonds c. The difference in free energy between reactants and products d. The energy required to initiate a chemical reactionarrow_forwardEnzymes catalyze a chemical reaction by A. decreasing the amount of ATP required to activate a reaction B. increasing the amount of ATP required to activate a reaction C. slowing down the reaction to obtain more products D. increasing the reaction to obtain more products E. decreasing the amount of ATP required and obtaining more products.arrow_forward
- What is the most common form of kinetic energy that is released from chemical energy in chemical reactions? A) Sound B) Electromagnetic radiation C) Electricity D) Light E) Thermalarrow_forwardChoose the best answer for the following question? The gain of electrons by a molecule is calleda. inhibition.b. entropy.c. oxidation.d. reduction.arrow_forwardSubstance A is converted to substance B in a metabolic reaction. Which statement best describes the role of enzyme during this reaction? A. It dissolves substance A in the reaction medium. B. It speeds up the reaction without it being consumed in the process. C. It provides energy to the reaction system D. It adjusts the pH of the reaction medium.arrow_forward
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