Inquiry Into Life (16th Edition)
16th Edition
ISBN: 9781260231700
Author: Sylvia S. Mader, Michael Windelspecht
Publisher: McGraw Hill Education
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Chapter 7.4, Problem 2QTC
While Figure 7B does not indicate the need for water, it is an important component of our diet. Where would water interact with these pathways?
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What is the advantage of using ATP as a common energy source?Another way of asking this question is, “Why does ATP provide anadvantage over using a bunch of different food molecules?” For example,instead of just having a Na+/K+-ATPase in a cell, why not have manydifferent ion pumps, each driven by a different food molecule, like aNa+/K+-glucosase (a pump that uses glucose), a Na+/K+-sucrase (a pumpthat uses sucrose), a Na+/K+-fatty acidase (a pump that uses fatty acids),and so on?
Why is the amount of ATP produced in cells that can undergo oxidative phosphorylation much greater than those that undergo substrate level phosphorylation only?
The products of a pathway, or the products of specific reactions in the pathway, will often inhibit upstream regulatory enzymes in that pathway. That makes sense - if the products of a pathway are abundant, then the pathway can be shut off to save energy or divert molecules into other pathways. We can use a similar rule of thumb to predict whether a pathway will be active in different biological states. For example, the liver stores glucose (in the form of glycogen), and will release glucose into the bloodstream when blood sugar levels drop. This glucose can come from the synthesis of glucose or breakdown of stored glycogen. This is important for maintaining blood sugar levels.
What would you predict is the relationship between blood sugar levels and glycogen phosphorylase enzyme activity?
A positive relationship (when blood sugar levels are high, glycogen phosphorylase activity is also high).
A negative relationship (when blood sugar levels are high, glycogen phosphorylase activity…
Chapter 7 Solutions
Inquiry Into Life (16th Edition)
Ch. 7.1 - Describe the overall equation for cellular...Ch. 7.1 - Prob. 2LOCh. 7.1 - Prob. 3LOCh. 7.1 - Explain the role of NAD+ and FAD in cellular...Ch. 7.1 - Distinguish between the aerobic and anaerobic...Ch. 7.1 - Prob. 3CYPCh. 7.2 - Describe the location and inputs and outputs of...Ch. 7.2 - Explain why ATP is both an input and output of...Ch. 7.2 - Explain why there is an energy-investment phase...Ch. 7.2 - Prob. 2CYP
Ch. 7.3 - Explain how ATP can continue to be produced in the...Ch. 7.3 - Describe the advantages and disadvantages of...Ch. 7.3 - Prob. 1QTCCh. 7.3 - Explain how fermentation acts as a NAD+ recycling...Ch. 7.3 - Describe the environmental conditions that would...Ch. 7.3 - Prob. 2CYPCh. 7.4 - Prob. 1LOCh. 7.4 - Summarize the inputs and outputs of the...Ch. 7.4 - Prob. 3LOCh. 7.4 - How might a meal of a cheeseburger and fries be...Ch. 7.4 - While Figure 7B does not indicate the need for...Ch. 7.4 - Prob. 1CYPCh. 7.4 - Prob. 2CYPCh. 7.4 - Discuss why there is variation in the number of...Ch. 7 - Prob. S2.5BYBCh. 7 - Prob. S3.3BYBCh. 7 - Figure 6.3 How does the ATP cycle resemble a...Ch. 7 - Prob. 1ACh. 7 - Prob. 2ACh. 7 - Prob. 3ACh. 7 - Prob. 4ACh. 7 - Prob. 5ACh. 7 - 6. During glycolysis, what is the net production...Ch. 7 - Prob. 7ACh. 7 - Prob. 8ACh. 7 - Prob. 9ACh. 7 - Prob. 10ACh. 7 - Which of these is not true of the citric acid...Ch. 7 - Which of these is not true of the electron...Ch. 7 - The oxygen required by cellular respiration is...Ch. 7 - Prob. 1TCCh. 7 - Rotenone is a broad-spectrum insecticide that...Ch. 7 - Some fat-burning compounds accelerate the movement...
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- A simple enzyme reaction can be described by the equation e + s ↔ es ↔ e + p, where e is the enzyme, s the substrate, p the product, and es the enzyme– substrate complex.Write a corresponding equation describing the workings of a transporter (T) that mediates the transport of a solute (s) down its concentration gradient.arrow_forwardWhat is the enzymatic activity of sodium-potassium ATPase (pump)? binds to and hydrolyzes ATP; binds to 3 Na+ in cytoplasm and releases outside cell; binds to 2 K+ outside cell and releases into cytoplasm binds to and hydrolyzes ATP; binds to 2 Na+ in cytoplasm and releases outside cell; binds to 3 K+ outside cell and releases into cytoplasm binds to and hydrolyzes GTP; binds to 3 Na+ in cytoplasm and releases into nucleus; binds to 2 K+ inside cell and releases into lysosome binds to and hydrolyzes 3 ATP; binds to 1 Na+ in cytoplasm and releases outside cell; binds to 1 K+ outside cell and releases into cytoplasmarrow_forwardExplain why some of the molecules are positioned away from the diagonal in the graph given below. What kind of processes are involved in this phenomenon? Moreover, explain differences and similarities between H-ATPases and H-PPases.arrow_forward
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