Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
10th Edition
ISBN: 9780133922851
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Textbook Question
Chapter 8.4, Problem 1CC
Many spontaneous reactions occur very slowly. Why don’t all spontaneous reactions occur instantly?
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Why are most spontaneous reactions exothermic?
An exergonic reaction has which of the following properties?
A) The △G is negative and the reaction is spontaneous.
B) The △G is negative and the reaction is non-spontaneous.
C) The △G is positive and the reaction is spontaneous.
Label the following statements true or false:
(a) A reaction is said to be spontaneous when it can proceed in either the forward or reverse direction.
(b) A spontaneous process always happens very quickly.
Chapter 8 Solutions
Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
Ch. 8.1 - MAKE CONNECTIONS How does the second law of...Ch. 8.1 - Describe the forms of energy found in an apple as...Ch. 8.1 - WHAT IF? If you place a teaspoon of sugar in the...Ch. 8.2 - Cellular respiration uses glucose and oxygen,...Ch. 8.2 - VISUAL SKILLS How would the processes of...Ch. 8.2 - WHAT IF? Some nighttime partygoers wear glow-in-...Ch. 8.3 - How does ATP typically transfer energy from an...Ch. 8.3 - Prob. 2CCCh. 8.3 - MAKE CONNECTIONS Does Figure 8.11a show passive...Ch. 8.4 - Many spontaneous reactions occur very slowly. Why...
Ch. 8.4 - Prob. 2CCCh. 8.4 - WHAT IF? Malonate is an inhibitor of the enzyme...Ch. 8.4 - Prob. 4CCCh. 8.5 - How do an activator and an inhibitor have...Ch. 8.5 - Prob. 2CCCh. 8 - Explain how the highly ordered structure of a cell...Ch. 8 - Explain the meaning of each component in the...Ch. 8 - Describe the ATP cycle: How is ATP used and...Ch. 8 - How do both activation energy barriers and enzymes...Ch. 8 - Prob. 8.5CRCh. 8 - Choose the pair of terms that correctly completes...Ch. 8 - Prob. 2TYUCh. 8 - Which of the following metabolic processes can...Ch. 8 - Prob. 4TYUCh. 8 - Some bacteria art metabolically active in hot...Ch. 8 - If an enzyme is added to a solution where its...Ch. 8 - Prob. 7TYUCh. 8 - EVOLUTION CONNECTION Some people argue that...Ch. 8 - Prob. 9TYUCh. 8 - WRITE ABOUT A THEME: ENERGY AND MATTER Life...Ch. 8 - Prob. 11TYU
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- Could you help me with this? I'm stuck on this question.arrow_forwardEntropy increase A) with every reaction B) only in open systems C) only under certain reaction conditions D) only in the physical world. This cannot happen in cells otherwise cells would lose their needed energyarrow_forwardMany biochemical reactions are non-spontaneous but are required for living organisms. How can they still proceed? A) Lower the temperature of the system. B) Increase the temperature of the system. C) Couple a non-spontaneous reaction with any spontaneous reaction D) Couple two reactions that result in a spontaneous process overall. Please provide only typed answer solution no handwritten solution needed allowedarrow_forward
- Which of the following relationships is (are) correct? (Select all that apply.) DG is equal to -TDSuniv DG > 0 represents a spontaneous process in the reverse direction. None of these DG < O represents a spontaneous process in the forward direction. DG < 0 indicates the reaction will reach equilibrium quickly.arrow_forwardWhy are many reactions that occur in living systems irreversible for all intents and purposes?arrow_forwardGive an example of each Irreversible and Reversible Reactions?arrow_forward
- A spontaneous reaction doesn't have an activation energy. True or false? True or Falsearrow_forwardWhat energy requirements must be met in order for a reaction to be favorable?arrow_forwardHow does INCREASING temperature affect the rate of reaction (how fast the reaction occurs)? HINT: there are TWO effects.arrow_forward
- 1. a) Fill in the blanks: a ____________ reaction is one that requires energy input, whereas a spontaneous reaction is one that _____________ energy. A spontaneous reaction is also called an ___________ reaction, whereas an endergonic reaction requires energy input. b) Briefly, why do living cells and organisms require an input of energy? c) How do animals like humans get their energy if they cannot obtain it directly from the sun like photosynthetic organisms? How do bacteria obtain energy? d) Chemical energy is the form of energy we will discuss. Where is the chemical energy stored in a molecule of glucose?arrow_forwardEnzymes work by... OA) Altering the equilibrium position of a reaction B) Altering the DG value for a reaction C) Increasing the activation energy for a reaction D) Preventing degradation of the product E) Promoting the formation of the transition statearrow_forwardthis one represents an endothermic reaction. Things are similar: the flat line on the left (beginning of the reaction) is the total energy possessed by the reactant molecules; once again, kJ stands for energy in kiloJoules, thousands of Joules. The flat line on the right (reaction complete) is the total energy of the products. Since an endothermic reaction has a net absorption of energy (taking this extra energy from the surroundings), the products have higher energy than the reactants. Question: the energy of the reactant molecules is kJ. [to answer, simply identify the correct y-axis coordinate.] 250 200 PE (kJ) 150 100 50 Reaction pathwayarrow_forward
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