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select all that apply Which of these experimental designs could help determine if the change in osmoregulation when the sharks and stingrays are exposed to freshwater is fully reversible if the fish experience saltwater again? In this experiment, the Na, Cl, and urea concentrations of two species of freshwater sharks and one species of freshwater stingray are measured in freshwater. The fish are moved to saltwater and then back to freshwater. Once the fish acclimate to each type of water, their solute concentrations are measured. In this experiment, a new sample of the shark and stingray species are selected and divided in half. The fish's Na, Cl, and urea concentrations are measured in saltwater. One-half of the fish are moved to freshwater and the other half are moved to new saltwater tanks. Their solute concentrations are measured every two hours as they acclimate to the new tanks. In this experiment, the Na, Cl, and urea concentrations of the shark and stingray species are measured in saltwater. The fish are moved to freshwater, then to a 50% saltwater solution, and finally back to 100% saltwater. After the fish acclimate to each new condition, their solute concentrations are measured. In this experiment, a sample of the shark and stingray species are moved to freshwater and then moved back to saltwater. The fish's Na, Cl, and urea concentrations are measured initially in saltwater. Once the fish acclimate to each type of water, their solute concentrations are measured.

select all that apply Which of these experimental designs could help determine if the change in osmoregulation when the sharks and stingrays are exposed to freshwater is fully reversible if the fish experience saltwater again? In this experiment, the Na, Cl, and urea concentrations of two species of freshwater sharks and one species of freshwater stingray are measured in freshwater. The fish are moved to saltwater and then back to freshwater. Once the fish acclimate to each type of water, their solute concentrations are measured. In this experiment, a new sample of the shark and stingray species are selected and divided in half. The fish's Na, Cl, and urea concentrations are measured in saltwater. One-half of the fish are moved to freshwater and the other half are moved to new saltwater tanks. Their solute concentrations are measured every two hours as they acclimate to the new tanks. In this experiment, the Na, Cl, and urea concentrations of the shark and stingray species are measured in saltwater. The fish are moved to freshwater, then to a 50% saltwater solution, and finally back to 100% saltwater. After the fish acclimate to each new condition, their solute concentrations are measured. In this experiment, a sample of the shark and stingray species are moved to freshwater and then moved back to saltwater. The fish's Na, Cl, and urea concentrations are measured initially in saltwater. Once the fish acclimate to each type of water, their solute concentrations are measured.

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Given the adaptations for osmoregulation in two species of sharks and one species of stingray in saltwater, scientists hypothesized that these species of fish would not be able to adjust their osmoregulation in freshwater. The scientists measured the concentrations of Na, Cl, and urea in all three species in both saltwater and freshwater. Their data are shown in the graph. The percentages do not sum to 100% because other solutes are involved to a lesser degree in osmoregulation. Percent contribution to osmoregulation in salt water (SW) and in freshwater (FW) 40- 30- Na-SW Na-FW CI-SW CI-FW Urea-SW Urea-FW Bull shark Atlantic stingray Small spotted catshark Select the hypothesis that best explains how and why the shark and stingray species adjust their solute levels. option was incorect To maintain osmotic balance with their surroundings, these species acclimate to changes in water salinity by altering only their urea concentration. Each species regulates Na, Cl, and urea concentrations in distinctly different ways in order to maintain osmotic balance with the external environment. By independently regulating Na, Cl, and urea levels, these species acclimate to changes in water salinity in order to maintain osmotic balance. These species acclimate to changes in water salinity by increasing Na, Cl, and urea levels so that they maintain osmotic balance with the surrounding water. Percent 20- 10-
Transcribed Image Text:Given the adaptations for osmoregulation in two species of sharks and one species of stingray in saltwater, scientists hypothesized that these species of fish would not be able to adjust their osmoregulation in freshwater. The scientists measured the concentrations of Na, Cl, and urea in all three species in both saltwater and freshwater. Their data are shown in the graph. The percentages do not sum to 100% because other solutes are involved to a lesser degree in osmoregulation. Percent contribution to osmoregulation in salt water (SW) and in freshwater (FW) 40- 30- Na-SW Na-FW CI-SW CI-FW Urea-SW Urea-FW Bull shark Atlantic stingray Small spotted catshark Select the hypothesis that best explains how and why the shark and stingray species adjust their solute levels. option was incorect To maintain osmotic balance with their surroundings, these species acclimate to changes in water salinity by altering only their urea concentration. Each species regulates Na, Cl, and urea concentrations in distinctly different ways in order to maintain osmotic balance with the external environment. By independently regulating Na, Cl, and urea levels, these species acclimate to changes in water salinity in order to maintain osmotic balance. These species acclimate to changes in water salinity by increasing Na, Cl, and urea levels so that they maintain osmotic balance with the surrounding water. Percent 20- 10-
select all that apply Which of these experimental designs could help determine if the change in osmoregulation when the sharks and stingrays are exposed to freshwater is fully reversible if the fish experience saltwater again? In this experiment, the Na, Cl, and urea concentrations of two species of freshwater sharks and one species of freshwater stingray are measured in freshwater. The fish are moved to saltwater and then back to freshwater. Once the fish acclimate to each type of water, their solute concentrations are measured. In this experiment, a new sample of the shark and stingray species are selected and divided in half. The fish's Na, Cl, and urea concentrations are measured in saltwater. One-half of the fish are moved to freshwater and the other half are moved to new saltwater tanks. Their solute concentrations are measured every two hours as they acclimate to the new tanks. In this experiment, the Na, Cl, and urea concentrations of the shark and stingray species are measured in saltwater. The fish are moved to freshwater, then to a 50% saltwater solution, and finally back to 100% saltwater. After the fish acclimate to each new condition, their solute concentrations are measured. In this experiment, a sample of the shark and stingray species are moved to freshwater and then moved back to saltwater. The fish's Na, Cl, and urea concentrations are measured initially in saltwater. Once the fish acclimate to each type of water, their solute concentrations are measured.
Transcribed Image Text:select all that apply Which of these experimental designs could help determine if the change in osmoregulation when the sharks and stingrays are exposed to freshwater is fully reversible if the fish experience saltwater again? In this experiment, the Na, Cl, and urea concentrations of two species of freshwater sharks and one species of freshwater stingray are measured in freshwater. The fish are moved to saltwater and then back to freshwater. Once the fish acclimate to each type of water, their solute concentrations are measured. In this experiment, a new sample of the shark and stingray species are selected and divided in half. The fish's Na, Cl, and urea concentrations are measured in saltwater. One-half of the fish are moved to freshwater and the other half are moved to new saltwater tanks. Their solute concentrations are measured every two hours as they acclimate to the new tanks. In this experiment, the Na, Cl, and urea concentrations of the shark and stingray species are measured in saltwater. The fish are moved to freshwater, then to a 50% saltwater solution, and finally back to 100% saltwater. After the fish acclimate to each new condition, their solute concentrations are measured. In this experiment, a sample of the shark and stingray species are moved to freshwater and then moved back to saltwater. The fish's Na, Cl, and urea concentrations are measured initially in saltwater. Once the fish acclimate to each type of water, their solute concentrations are measured.
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