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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Chapter 6, Problem 10TYU
FOCUS ON EVOLUTION
A recent revival of the antievolutionary “intelligent design” argument holds that biochemical pathways are too complex to have evolved, because all intermediate steps in a given pathway must be present to produce the final product. Critique this argument. How could you use the diversity of
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How could you use the diversity of metabolic pathways that produce the same or similar products to critique this argument?
Rank the steps from first to last.
a. New enzymes cause modification of the pathway in an advantageous way. b. The biochemical pathway is gradually modified. c. A pathway exists and accomplishes some functions. d. An organism with cellular enzymes has mutations that allow new enzymes to arise.
The function of a biochemical pathway is to (a) supply energy to reactions (b) drive a sequence of reactions in a particular direction (c) maintain chemical equilibrium (d) make energy available to endergonic reactions (e) any of the preceding, depending on the pathway
A dichotomous key works by determining positive and negative reactions to different biochemicals. Why does this method allow us to identify one species of organism from another? – for this question, do not describe the dichotomous key procedure, think about why it works, what are biochemical reactions based on? Think enzymatic pathways, what are enzymes, what are they a reflection of? Keep the answer between 2-3 sentences
Chapter 6 Solutions
Campbell Biology in Focus
Ch. 6.1 - MAKE CONNECTIONS How does the second law of...Ch. 6.1 - Describe the forms of energy found in an apple as...Ch. 6.2 - Cellular respiration uses glucose and oxygen,...Ch. 6.2 - Prob. 2CCCh. 6.2 - Prob. 3CCCh. 6.3 - How does ATP typically transfer energy from...Ch. 6.3 - Prob. 2CCCh. 6.3 - MAKE CONNECTIONS Does Figure 6.10a show passive or...Ch. 6.4 - Many spontaneous reactions occur very slowly. Why...Ch. 6.4 - Why do enzymes act only on very specific...
Ch. 6.4 - WHAT IF? Malonate is an inhibitor of the enzyme...Ch. 6.4 - A mature lysosome has an internal pH of around...Ch. 6.5 - How do an activator and an inhibitor have...Ch. 6.5 - Prob. 2CCCh. 6 - Choose the pair of terms that correctly completes...Ch. 6 - Prob. 2TYUCh. 6 - Which of the following metabolic processes can...Ch. 6 - If an enzyme in solution is saturated with...Ch. 6 - Some bacteria are metabolically active in hot...Ch. 6 - If an enzyme is added to a solution where its...Ch. 6 - DRAW IT Using a series of arrows, draw the...Ch. 6 - Prob. 8TYUCh. 6 - SCIENCE, TECHNOLOGY, AND SOCIETY Organophosphates...Ch. 6 - FOCUS ON EVOLUTION A recent revival of the...Ch. 6 - FOCUS ON ENERGY AND MATTER Life requires energy....Ch. 6 - SYNTHESIZE YOUR KNOWLEDGE Explain what is...
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- Biology 1.Which of the following would be important for the catalysis of a reaction by any enzyme? a. the capacity of the substrate to diffuse b. the capacity of the enzyme to bind the substrate c. the capacity of the enzyme to release the product of the reaction d. A and B are both important. e. A, B and C are all important.arrow_forwardPart A: Say that a cell is running a metabolic pathway that follows the same pattern as the diagram and something happens that prevents enzyme 3 from reacting normally. Of the following options, which one is the end result of this interrupted metabolic pathway? Part B: for this reaction to be an example of feedback inhibition, the ____ would have to be blocking enzyme 3. Answer choices: • pH • Product • Salinityarrow_forwardMetabolic pathways (a) always break down large molecules into smaller units. (b) only link smaller molecules together to create polymers. (c) are often organized as a multistep sequence of reactions. (d) occur only in mitochondria.arrow_forward
- A dichotomous key works by determining positive and negative reactions to different biochemicals. Why does this method allow us to identify one species of organism from another? For this question, do not describe the dichotomous key procedure, think about why it works, what are biochemical reactions based on? Think enzymatic pathways, what are enzymes, what are they a reflection of?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_forwardjustify the dependence of life on the sun and the interdependence of living things and their chemistry. People who do not understand the relationships between biological processes on the planet may roll their eyes at the statement, "Life on this planet is a delicate balance." What evidence have you found in this course so far to support this statement? Consider: The relationship between the sun, autotrophs, and heterotrophs. Give examples of how the relationship between each group. The relationship between photosynthesis and cellular respiration. Explain the chemical reactants and products of one to the other. The relationship between oxidation and reduction reactions. Define and provide an example of each. The production and consumption of ATP during photosynthesis and cellular respiration. Be detailed in where ATP is made, and where it may be used both in photosynthesis and cellular respiration.arrow_forward
- Select all that apply. Which of the following are not properties of enzymes? not required to sustain the life of an organism sensitive to pH and temperature of their environment able to interact with all compounds or substrates large proteins with a special surface patternarrow_forwardUsing good details, compare and contrast the pairs of different biochemical reactions. Create your own comparing and contrasting map similar to the one below to show your understanding. Oxidation vs Reduction.arrow_forwardEnzymes play a fundamental role in cell function. Regarding the biochemistry of enzymes, which of the following statements is correct? A. Enzymes increase the number of molecules that get to the transition state. B. Enzymes increase the rate of a spontaneous reaction by lowering the ΔG. C. Enzymes increase the enthalpy (H) of the products compared to the reactants. D. Most enzymes can bind and react with a wide range of different substrate molecules.arrow_forward
- Which of the following statements regarding catalysts is false? * A catalyst increases the rate of a reaction by giving the reaction an alternate pathway with a lower activation energy. * Catalysts don't need to be present in large amounts because they are regenerated during the reaction. * Enzymes act as catalysts in our bodies. * Catalysts do not participate in the reaction. * The shape of an active site on an enzyme is unique, allowing it to react with only one substrate.arrow_forwardA hypothetical three-step metabolic pathway consists of intermediates W, X, Y, and Z and enzymes A, B, and C. Deduce the order of the enzymatic steps in the pathway from the following information: 1. Compound Q, a metabolic inhibitor of enzyme B, causes Z to build up. 2. A mutant in enzyme C requires Y for growth. 3. An inhibitor of enzyme A causes W, Y, and Z to accumulate. 4. Compound P, a metabolic inhibitor of enzyme C, causes W and Z to build up.arrow_forwardEnzymes can: make exothermic reactions into endothermic reactions. change the direction of a biochemical pathway. contain multiple subunits and be very complex (e.g., ATP synthase) be broken down into monosaccharide subunits. None of these.arrow_forward
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Anaerobic Respiration; Author: Bozeman Science;https://www.youtube.com/watch?v=cDC29iBxb3w;License: Standard YouTube License, CC-BY