Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Chapter 40, Problem 14PIAT
Summary Introduction
To review:
The results related to the activity of Na+/K+-ATPase (sodium/potassium adenosine triphosphatase) in the gills of the fish exposed to aluminum and its comparison with the control fish.
Introduction:
The Na+/K+- ATPase is the enzyme, which works as a pump, and is found in the plasma membrane of the cell. Its function is to allow the movement of sodium ions out of the cell and potassium ions into the cell. Scientists exposed freshwater bony fish (Prochilodus lineatus) exposed to water with high aluminum level and another set of fish that was exposed to water with normal aluminum levels (control). The results of the data are shown in graph below:
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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?
According to as shown, cycling at 15 km/h requires less metabolic energy than running at 15 km/h. Suggest reasons why this is the case.
Compared to NADH, NAD is a ____ molecule. If the Na/K pump stopped working, there would be an immediate and temporary net____ in cellular ATP .
Select one:
a.
Oxidized, decrease
b.
Oxidized, increase
c.
Reduced, decrease
d.
Reduced, increase
Chapter 40 Solutions
Biological Science (6th Edition)
Ch. 40 - 1. Which of the following statements is true of...Ch. 40 - Prob. 2TYKCh. 40 - 3. What effect does antidiuretic hormone (ADH)...Ch. 40 - Fill in the blank: In Gila monsters, the organ in...Ch. 40 - Prob. 5TYUCh. 40 - Prob. 6TYUCh. 40 - Prob. 7TYUCh. 40 - 8. Scientists have noted that marine invertebrates...Ch. 40 - Prob. 9TYPSSCh. 40 - Prob. 10TYPSS
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