Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 2TYU
Which of the following statements correctly describes any
A. The concentrations of products and reactants are equal.
B. The reaction is now irreversible.
C. Both forward and reverse reactions have halted.
D. The rates of the forward and reverse reactions are equal.
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Chapter 2 Solutions
Campbell Biology in Focus
Ch. 2.1 - Is a trace element an essenteal element? Explain.Ch. 2.1 - Prob. 2CCCh. 2.2 - A nitrogen atom has 7 protons and the most common...Ch. 2.2 - Prob. 2CCCh. 2.2 - Prob. 3CCCh. 2.3 - Why does the structure HCCH fail to make sense...Ch. 2.3 - What holds the atoms together in a crystal of...Ch. 2.3 - If you were a phamaceutical researcher, why would...Ch. 2.4 - Which type of chemical reaction occurs faster at...Ch. 2.4 - Write an equation that uses the products of...
Ch. 2.5 - Prob. 1CCCh. 2.5 - How can the freezing of water crack boulders?Ch. 2.5 - Compared with a basic solution at pH 9, the same...Ch. 2.5 - What would be the effect on the properties of the...Ch. 2.5 - Prob. 5CCCh. 2 - The reactivity of an atom arises from A. the...Ch. 2 - Which of the following statements correctly...Ch. 2 - Many mammals control their body temperature by...Ch. 2 - We can be sure that a mole of table sugar and a...Ch. 2 - Measurements show that the pH of a particular lake...Ch. 2 - Prob. 6TYUCh. 2 - What coefficients must be placed in the following...Ch. 2 - A Slice of pizza has 500 kcal. If we could burn...Ch. 2 - Draw the hydration shells that from around a...Ch. 2 - What do climate change (see Concept 1.1) and ocean...Ch. 2 - SCIENTIFIC INQUIRY Female luna moths (Actias luna)...Ch. 2 - FOCUS ON EVOLUTION The percentage of naturally...Ch. 2 - FOCUS ON ORGANIZATION Several emergent properties...Ch. 2 - SYNTHESIZE YOUR KNOWLEDGE How do cats drink?...
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- Which of the following statements are correct about how enzymes accelerate chemical reactions (select all that apply)? A. Enzymes bind substrates to raise their effective concentration B. Enzymes enhance the rate of a chemical reaction C. Enzymes catalyze chemical reactions by destabilizing transition states D. Side chains of protein provide reactive groups that facilitate reaction E. Enzymes shift the equilibrium of a chemical reaction to favor product formationarrow_forwardAll chemical reactions are theoretically reversible. However, many biological reactions are irreversible. Which factor(s) contribute to the irreversibility of biological reactions? a. high energy requirementsb. product removalc. state of chemical equilibriumd. a and be. a, b, and carrow_forwardWhich of the following statements is false? a. A reaction may not occur at a detectable rate even though it has a favorable equilibrium. b. After a reaction, the enzyme involved becomes available to catalyze the reaction again. c. For S → P, a catalyst shifts the reaction equilibrium to the right. d. Lowering the temperature of a reaction will lower the reaction rate. e. Substrate binds to an enzyme's active site.arrow_forward
- Which of these statements concerning enzymes is correct?a. Enzymes increase the rate of reactions but are permanentlychanged as a result.b. Enzymes are proteins that function as catalysts.c. Enzymes increase the activation energy requirement for a reactionto occur.d. Enzymes usually can only double the rate of a chemicalreaction.e. Enzymes increase the kinetic energy of the reactants.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_forwardWhich of the followingdescribe superior properties of enzymes (biological catalysts) over traditional chemical catalysts? a. They are mostly and generally operative under mild temperature, pressure, and pH conditions b. They are regulated only by substrate concentration c. They do not effect the reaction equilibrium, but lower the reaction's activation energy d. They are recycled at the end of the reaction Choose all that applyarrow_forward
- One major difference between inorganic catalysts and organic catalysts is: A. Inorganic catalysts may not be compatible with biological parameters B. Organic catalysts are consumed during the chemical reaction C. Organic catalysts influence the activation energy of a reaction D. Inorganic catalysts decrease the probability a reaction will occurarrow_forwardWhich of the following statements concerning enzymes is TRUE? a. Enzymes can increase the equilibrium constant of a reaction by 1000-fold. b. The activity of many enzymes can be regulated. c. Many enzymes are consumed in the reactions they catalyze. d. The rate of enzymatic catalysis is independent of pH.arrow_forwardWhich of these statements concerning enzymes is correct? a. Enzymes increase the rate of reactions but are permanently changed as a result. b. Enzymes are proteins that function as catalysts. c. Enzymes increase the activation energy requirement for a reaction to occur. d. Enzymes usually can only double the rate of a chemical reaction. e. Enzymes increase the kinetic energy of the reactants.arrow_forward
- On the energy diagram below, which point represents a transition state? energy A B. Point 1 Point 2 C. Point 3 D. Point 4 reaction coordinatearrow_forwardA substance that has weight and occupies space is calleda. kinetic energy.b. a catalyst.c. matter.d. potential energy.arrow_forwardWhich of the following is TRUE about the enzymatic catalysis of a chemical reaction? A. It increases the energy of the transition state B. It decreases the free energy ∆G so that a reaction can proceed spontaneously C. It decreases the energy of the transition state D. It increases the forward and reverse ratesarrow_forward
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