Campbell Essential Biology (7th Edition)
7th Edition
ISBN: 9780134765037
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 5, Problem 16PS
Interpreting Data The graph illustrates two
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Choose in the options what do enzymes do for the activation of energy of the reaction -Ea, given the theory of collision?
a. enzymes will bind the reactants
b. enzyme will raise temperature to incease the level of energy level.
c. enzyme will provide an alternative reaction pathway
Based on the given question which of the following choices is the correct answer?A. When an enzyme catalyzes a reaction, it increases the activation energy of the reactionB. When an enzyme catalyzes a reaction, it decreases the activation energy of the reactionC. When an enzyme catalyzes a reaction, it increases the activation energy of the productD. When an enzyme catalyzes a reaction, it does not affect the activation energy of the reaction.
The graph below shows an energy diagram for three chemical reactions. Pick your favorite one and indicate:
the activation energy
the transition state
the free energy change for that reaction
Draw a new curve on the graph to indicate how an enzyme that catalyzes the reaction will change the energetics.
Chapter 5 Solutions
Campbell Essential Biology (7th Edition)
Ch. 5 - Prob. 1SQCh. 5 - _____ is the capacity to perform work, while _____...Ch. 5 - The label on a candy bar says that it contains 150...Ch. 5 - Prob. 4SQCh. 5 - Prob. 5SQCh. 5 - Prob. 6SQCh. 5 - Prob. 7SQCh. 5 - Prob. 8SQCh. 5 - Prob. 9SQCh. 5 - Prob. 10SQ
Ch. 5 - Prob. 11IMTCh. 5 - For each statement, identify which major theme is...Ch. 5 - For each statement, identify which major theme is...Ch. 5 - HIV, the virus that causes AIDS, depends on an...Ch. 5 - Interpreting Data The graph illustrates two...Ch. 5 - Prob. 17BSCh. 5 - Nanotechnology devices can improve human health....Ch. 5 - Prob. 19BS
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- What does it require for the necessary reactions to occur if there is the absence of enzymes? choices: higher temp, larger cells, smaller atoms, larger proteinsarrow_forwardWhat is an example where molecules or aroma within a cell physically overcome some barrier to their reaction going forward thag is exergonic one? (hint: think about what a catalyst physically does during a reaction).arrow_forwardUse 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_forward
- Test Your Understanding 8. Induced fit means that when a substrate binds to an enzymes active site, (a) it fits perfectly, like a key in a lock (b) the substrate and enzyme undergo conformational changes (c) a site other than the active site undergoes a conformational change (d) the substrate and the enzyme become irreversibly bound to each other (e) c and darrow_forwardTest Your Understanding Know and Comprehend 7. In a redox reaction, (a) energy is transferred from a reducing agent to an oxidizing agent (b) a reducing agent becomes oxidized as it accepts an electron (c) an oxidizing agent accepts a proton (d) a reducing agent donates a proton (e) the electrons in an atom move from its valence shell to a shell closer to its nucleusarrow_forwardFigure 4.5 Energy inputs and outputs in chemical reactions. 1 Some reactions convert molecules with lower energy to molecules with higher energy, so they require a net energy input in order to proceed. 2 Other reactions convert molecules with higher energy to molecules with lower energy, so they end with an energy release Figure It Out: Which law of thermodynamics explains energy inputs and outputs in chemical reactions?arrow_forward
- Test Your Understanding Apply and Analyze 14. Consider the following reaction (in water): HCl H+ + Cl Name the reactant(s) and product(s). Does the expression indicate that the reaction is reversible? Could HCl be used as a buffer?arrow_forwardBen is studying an enzyme-catalyzed reaction. In the reaction, H+ ions are formed. He found that after a specific time, the reaction stopped, even though there was still a lot of substrate available in the mixture. a) Propose a hypothesis to explain why the reaction stopped.arrow_forward1-sketched a graph to show what I think the effect of temperature will be on the rate of reaction (the effect of temperature on enzyme activity) 2-describe in words what you predict the effect of temperature will be on the rate of reactionarrow_forward
- How do enzymes speed up chemical reactions? Incorporate the terms "induced fit" and "activation energy" in your explanation.arrow_forwardin oder to accelerate chemical reactions enzymes have evolved 1) High affinity towards the product 2) Low affinity towards Co- enzyme 3) High affinity towards co-substrates 4) High affinity towards the transition state 5) Low affinity towards the substratearrow_forwardA biologist investigating enzyme function plotted the activity of a particular enzyme (y-axis) vs pH (x-axis). Experiment A was performed at 30 oC, experiment B at 10 oC and experiment C at 100 oC. Experiments A, B, and C all used the same type of enzyme, they simple tested the enzyme's activity at different temperatures. Using your knowledge of enzyme activity, answer the questions based on the results shown in the graph. (Answer question B) Graph included B. Why is there no hill in the middle of line C?arrow_forward
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