A dehydrated runner drinks a lot of water after a race. They rehydrate because
A. the stomach is hypotonic compared to the bloodstream.
B. the bloodstream is hypotonic compared to the stomach.
C. the stomach and bloodstream are isotonic compared to each other.
D. water will diffuse from a low to high concentration.
Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
Gather Content
· What do you know about osmosis? What other information is related to the question?
Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
A. the stomach is hypotonic compared to the bloodstream.
Clarify Question
· What is the key concept addressed by the question?
o The question asks about osmosis.
· What type of thinking is required?
o You are being asked to apply your knowledge about osmosis.
Gather Content
· What do you know about osmosis? What other information is related to the question?
o In osmosis, water moves from an area that is hypotonic to an area that is hypertonic.
Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
o After a race if a person is dehydrated then there is less water in their blood and the blood is hypertonic. The water the runner just drank will make their stomach hypotonic. The water will then move from the hypotonic stomach to the hypertonic blood.
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
o This question asked you to apply your knowledge about osmosis. If you got the correct answer, great job! If you got an incorrect answer, where did the process break down? Did you think that water moved towards a hypotonic area? Did you think that drinking water would make the stomach more hypertonic?
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