ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
3rd Edition
ISBN: 9780135964422
Author: Urry
Publisher: PEARSON
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Textbook Question
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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Students have asked these similar questions
Which statement about metabolic pathways is false?
OA. A specific enzyme catalyzes each transformational step.
B. Chemical transformations occur in a series of separate chemical reactions.
O C. Inhibitors that target some key enzymes in a pathway can slow the rate of reaction.
D. Activators that target some key enzymes in a pathway can increase the rate of reaction.
E. In prokaryotes, reactions in a pathway are located in multiple compartments.
can an expert plz explain each point
in detail plz
C
Bioenergetics - Chapter 5 Energy plays a significant role in all biological systems - where
does this energy come from?
-Classes and roles of enzymes as largest category of proteins
-Free energy as composed of entropy and enthalpy terms
-AG as predictor of spontaneity of reactions
-Factors leading to sufficiently negative AG in biochemical systems
Which of the following is NOT a true statement about the diagram below?
Intermediate A
Intermediate B
Pathway
operates
End-product
© 2019 Parson Education ne
O
O
O
O
O
Substrate
-Enzyme 1
Allosteric
site
-Enzyme 2
-Enzyme 3-
Pathway
shuts down
Bound
end-product
The diagram shows a metabolic pathway
Each enzyme is specific for its substrate
The product of each enzyme reaction becomes a substrate for the next enzyme
None of the other four answers (all are true statements)
The end-product serves as a competitive inhibitor of the substrate on Enzyme 1
Chapter 6 Solutions
ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
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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- Part 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_forward1, DIm 'T (4) T, U, G, and C 2. Read.carefully the "help-wanted advertisement" below. Then select which applicant would be best qualified for the job. Executive Position available. Must be able to maintain genetic continuity through replication and to control cellular activity by regulation of enzyme production. Limited number of openings available. All benefits. Ple. (1) ATP (2) DNA (3) protein catalyst (4) receptor molecule 3. A gene mutation may be transmitted to offspring if the mutation occurs within (1) an egg cellarrow_forwardPlz give detailed answer.arrow_forward
- 1. Carbon dioxide +Water+ Energy → Sugar + Oxygen 2. Sugar + Oxygen → Water + Carbon Dioxide + Energy the second reaction shown here (cellular respiration), which of these descriptions compares the products and reactants The process produces ADP as a product, which has a lower energy level compared to the reactants. The process produces inorganic molecules only, which have a lower energy level compared to the products. The process produces ATP as a product, which provides a greater cellular energy compared to the reactants. The process produces heat energy as a byproduct, which causes the reactants to be less energetic compared to the products. Carbon Dloxide Production in Snails & Elodea Test Tube Contents Tube A: control Initial Color Light Set Up Dark Set Up green green blue green green areonarrow_forwardWhich of the following is NOT true about metabolic pathways in general? They can be anabolic or catabolic They can be both energy-releasing (exergonic) and energy-requiring (endergonic) They are often made up of a series of chemical reactions They often have multiple different enzymes working in the same pathway Each metabolic pathway is entirely separate and does not interact or connect at all with other metabolic pathwaysarrow_forwardMany enzymes help in cellular respiration. Using the figure to the right, explain the difference between this reaction with and without an enzyme. You must use the following terms in your answer; active site, induced fit, substrate and activation 1. Enzyme Action Without enzyme Activation energy without enzyme energy. With enzyme Activation energy with enzyme Reactants: Glucose + 0, Overall energy released during reaction Products: co, + H,0 Do NOT answer both questions 2 and 3. Choose only ONE to answer in the space provided. 2. The enzyme catalase is a polypeptide. Would you expect this enzyme to move through the cell membrane via simple diffusion? Explain your answer and provide a possible solution if catalase can't move across a membrane. 3. It is important for humans to make sure they consume small amounts of minerals (e.g. magnesium oxide or zinc oxide) in their food or in a supplement of some sort. Explain the value that some minerals play in assisting with many of our body's…arrow_forward
- Would you describe metabolic pathways as inherently wasteful or inherently economical, and why?arrow_forwardQ1: Why is it important that enzymes are not permanently altered when they bind with substrate molecules? Q2: How would a higher temperature or higher salt concentration make it more difficult for an enzyme to function effectively? Q3: If a cell was unable to produce a particular enzyme necessary for a metabolic pathway, describe how the absence of that enzyme would affect the cell.arrow_forwardEnzymes are catalysts that greatly increase the rates of biochemical reactions. They convert substrate molecules (S) to product molecules (P) in the reaction SP by functioning in which way? O increase the free energy of the subutrate meilecuiles increase the free energy of activation of the reaction O decrease the free energy of activation for the reaction O increase the free energy released by the reactionarrow_forward
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