Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 33, Problem 3MCQ
Summary Introduction
Introduction:
The mechanism through which the concentration of ions in the body fluids is regulated is known as osmoregulation. The essential minerals, water, and ions are regulated by the mechanism and the mechanism is different in animals of different habitat.
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To keep the proper concentrations of water and solutes in their blood, freshwater bony fish must drinka. lots of water and excrete large volumes of urine that are hypotonic to body fluids.b. no water and excrete large volumes of urine that are hypotonic to body fluids.c. lots of water and excrete large volumes of urine that are isotonic to body fluids.d. no water and excrete large volumes of urine that are isotonic to body fluids.
Sharks live in marine (saltwater) habitats and are osmoconformers. Based on this information which of the following is/are true (select all that apply): A. Sharks have tissues/body fluids that are isoosmotic relative to the environment B. Sharks have tissues/body fluids that are hypoosmotic relative to the environment C. Sharks devote considerable energy to osmoregulation D. Sharks do not devote much energy to osmoregulation
Freshwater vertebrates ...
A.
are hyperosmotic regulators.
B.
produce large volumes of hypoosmotic urtine.
C.
maintain lower osmolalities of extracellular fluid (blood) compared with marine fishes in order to reduce osmotic water intake.
D.
are adapted to take in Na+, Cl– and Ca2+ by means of active transport across the gills and skin.
E.
ALl of the above answer choices correctly complete the sentence.
Chapter 33 Solutions
Biology: Concepts and Investigations
Ch. 33.1 - Prob. 1MCCh. 33.1 - Prob. 2MCCh. 33.1 - Prob. 3MCCh. 33.2 - What is osmoregulation, and why is it important?Ch. 33.2 - Prob. 2MCCh. 33.2 - Prob. 3MCCh. 33.3 - Prob. 1MCCh. 33.3 - Prob. 2MCCh. 33.4 - Prob. 1MCCh. 33.4 - Prob. 2MC
Ch. 33.5 - What three processes occur in urine formation?Ch. 33.5 - Prob. 2MCCh. 33.5 - Describe the roles of antidiuretic hormone and...Ch. 33.6 - Prob. 1MCCh. 33.6 - Prob. 2MCCh. 33 - Prob. 1MCQCh. 33 - Prob. 2MCQCh. 33 - Prob. 3MCQCh. 33 - Prob. 4MCQCh. 33 - Prob. 5MCQCh. 33 - Which of the following components of glomerular...Ch. 33 - Prob. 7MCQCh. 33 - Prob. 1WIOCh. 33 - Prob. 2WIOCh. 33 - Prob. 3WIOCh. 33 - Prob. 4WIOCh. 33 - Prob. 5WIOCh. 33 - Prob. 6WIOCh. 33 - How does the kidney reduce the volume of urine to...Ch. 33 - Prob. 8WIOCh. 33 - Prob. 1PITCh. 33 - Prob. 2PITCh. 33 - Prob. 3PIT
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- Emodin (a laxative) is used to treat constipation. This drug inhibits Aquaporin 3 located in the cells lining the colon. a. What can you infer regarding the function of Aquaporin 3? b. How will the drug treat constipation? Use the given image as a guide in answering the questionarrow_forwardSome aquatic organisms, when confronted with a changing external osmotic environment, allow the internal (but extracellular) fluid osmotic pressure to follow, or to "match," the external osmotic pressure as it changes. This organism would be classified as a(an) ... A. hyporegulator. B. osmoconformer. C. osmomanipulator. D. hyperregulator. E. osmoregulator.arrow_forwardThe figure at right illustrates the relationship between body fluid osmotic concentration and environment osmotic concentration for several aquatic animals. In seawater (ambient osmotic pressure = 1000 mOsm), the shrimp is best described as... A. A hypo-ionic regulator B. A hyperosmotic conformer C. A hypo-osmotic regulator D. A euryhaline conformer E. None of the above Blood osmotic pressure (mOsm) 1500 1000 500 0 0 Green crab Mussel Shrimp 500 1000 Ambient osmotic pressure (mOsm) 1500arrow_forward
- Which of the following is NOT an ion homeostatically maintained in vertebrates? a. Cl– b. Na+ c. Ca2+ d. Fl–arrow_forwardA marine shark is best described as... A. A hypo-ionic, hypo-osmotic ammonotele B. A hypo-ionic, ureotelic osmoconformer C. An ammonotelic iono- and osmoconformer D. A uricotelic hyperionic, hyperosmotic regulator E. None of the abovearrow_forwardCompare and contrast the complete functions of the kidneys and the heart using a table. If you can only choose 1 to remain in your body, what whould you choose? Make your reason more substantial by considering the role of both the heart and the kidneys in blood pressure regulation.arrow_forward
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