Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 5.1, Problem 2CSC
Vicious Venoms
Most snake venoms are nasty cocktails of toxins. In addition to breaking down phospholipids, some rattlesnake venoms contain toxins that bind to and inhibit the activity of receptor proteins for acetylcholine. Inhibiting the action of acetylcholine on heart muscle cells increases heart rate, which speeds the travel of venom through the body. Krait snakes, native to Asia, produce a venom protein that binds to the direct-acting membrane channel receptors for acetylcholine, including those on skeletal muscle cells. Once bound, the protein remains firmly attached, blocking acetylcholine from binding. This prevents muscles from contracting: an untreated krait bite victim often dies when the skeletal muscles that control breathing are paralyzed.
The ability of substances to move across membranes is crucial not only to controlling heart rate and breathing, but also to all other aspects of staying alive. How do proteins control the movement of substances across membranes?
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Chapter 5 Solutions
Biology: Life on Earth with Physiology (11th Edition)
Ch. 5.1 - Prob. 1CYLCh. 5.1 - diagram and describe the fluid mosaic model of...Ch. 5.1 - Prob. 3CYLCh. 5.1 - Researchers have recently discovered ion channels...Ch. 5.1 - Vicious Venoms Some of the most devastating...Ch. 5.1 - Vicious Venoms Most snake venoms are nasty...Ch. 5.2 - Prob. 1CYLCh. 5.2 - Prob. 2CYLCh. 5.2 - Prob. 3CYLCh. 5.2 - Prob. 1TC
Ch. 5.2 - Prob. 2TCCh. 5.2 - If a plant cell is placed in water containing no...Ch. 5.2 - Would a cell over use active transport to move...Ch. 5.2 - Prob. 5TCCh. 5.2 - Prob. 1HYEWCh. 5.3 - Prob. 1CYLCh. 5.3 - explain how these junctions function and provide...Ch. 5.3 - Prob. 1TCCh. 5 - Animal cells are surrounded by________ fluid is...Ch. 5 - Which of the following cannot enter a cell by...Ch. 5 - Prob. 3MCCh. 5 - Prob. 4MCCh. 5 - Prob. 5MCCh. 5 - Prob. 1FIBCh. 5 - A membrane that is permeable to some substances...Ch. 5 - Prob. 3FIBCh. 5 - Prob. 4FIBCh. 5 - After each molecule, place the two-word term that...Ch. 5 - Prob. 6FIBCh. 5 - Prob. 1RQCh. 5 - Prob. 2RQCh. 5 - What are the five categories of proteins commonly...Ch. 5 - Prob. 4RQCh. 5 - Define hypotonic, hypertonic, and isotonic. What...Ch. 5 - Describe the following types of transport...Ch. 5 - Prob. 7RQCh. 5 - Prob. 8RQCh. 5 - Prob. 9RQCh. 5 - Prob. 1ACCh. 5 - Predict and sketch the configuration that ten...
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