BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 49.4, Problem 1LO
Summary Introduction
To differentiate: Osmotic adaptations in marine fish and freshwater fish.
Introduction: Osmosis refers to the process of diffusion of water molecules across a semipermeable membrane. This movement of water molecules typically occurs to a less dilute solute from a more dilute solute. The osmotic pressure denotes the measure of the solution’s tendency to gain water molecules through osmosis. A solution’s tonicity indicates the measure of its ability to alter the cell’s volume through osmosis. An animal cell takes in water in a hypotonic solution, excretes water in a hypertonic solution, and no net exchange of water is observed when placed in an isotonic solution.
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Discuss osmotic balance in freshwater and saltwater fishes.
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Chapter 49 Solutions
BIOLOGY
Ch. 49.1 - Prob. 1LOCh. 49.1 - Prob. 2LOCh. 49.2 - Identify the relative toxicity and solubility of...Ch. 49.3 - Prob. 1LOCh. 49.3 - Define reabsorption and secretion.Ch. 49.4 - Prob. 1LOCh. 49.4 - Explain the role of the loop of Henle in the...Ch. 49.5 - Prob. 1LOCh. 49.5 - Prob. 2LOCh. 49.5 - Prob. 3LO
Ch. 49.6 - Prob. 1LOCh. 49.6 - Prob. 2LOCh. 49 - Prob. 1DACh. 49 - Which of the following is NOT an ion...Ch. 49 - Prob. 2UCh. 49 - A sharks blood is isotonic to the surrounding...Ch. 49 - An important function of the excretory system is...Ch. 49 - Which of the following is a function of the...Ch. 49 - Humans excrete their excess nitrogenous wastes as...Ch. 49 - An osmoregulator would maintain its internal...Ch. 49 - Prob. 1ACh. 49 - A viral infection that specifically interferes...Ch. 49 - Diuretics are drugs that can be used to treat high...Ch. 49 - Caffeine inhibits the secretion of ADH. Prior to...Ch. 49 - You and your study partner want to draw the...Ch. 49 - You are studying renal function in different...Ch. 49 - Prob. 1SCh. 49 - Johns doctor is concerned that Johns kidneys may...
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- What are the osmotic challenges faced by marine animals like fish? Describe how they cope with these challenges to maintain solute and water balance in their tissues.arrow_forwardDescribe the water vascular system that seastars utilize for locomotion, respiration, and food capture. What is the name of the siege that regulates water flow between the organism and environment?arrow_forwardExplain how insects use Malpighian tubules to excrete wastes and maintain osmotic balancearrow_forward
- Why are sharks osmoconformers yet ionoconformers? Explain using concepts on osmoregulation and ionoregulation.arrow_forwardDiscuss the contrasting osmotic problems faced by freshwater and marine teleost fish, and the mechanism by which these fish address these problems in order to remain in osmotic balance.arrow_forwardCompare the osmoregulatory problems and adaptations of a hypo-osmotic shallow marine fish, a hyperosmotic freshwater fish, a deep-sea fish, a salmon, and a terrestrial vertebratearrow_forward
- Regarding osmoregulation, what physiological and behavioral changes would occur as a fish migrates from a freshwater stream to the ocean?arrow_forwardWhy do marine entities lack contractile vacuoles as compared to fresh water entities?arrow_forwardDo marine mussels use the sodium potassium pump?arrow_forward
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