The total solute concentration of a red blood cell is about 2%. Sucrose cannot pass through a red blood cell's plasma membrane, but water and urea can. Which of the following solutions will cause a red blood cell to shrink?
A) a hypertonic sucrose solution B) a hypertonic urea solution
C) a hypotonic sucrose solution D) a hypotonic urea solution
Answer: A
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Which of the labeled layers in the diagram of the arterial wall consists mainly of elastic fibers and smooth muscle fibers?
a) A b) B c) C d) A and B e) A, B and C
Explain why a bad cold can result in food not tasting the same as it normally does
What will be an ideal response
The superior and inferior lobes of the left lung are separated by (the)
A) sagittal fissure. B) horizontal fissure. C) transverse fissure. D) oblique fissure. E) None of the answers are correct.
What is the glutamic acid made from transamination used for?
A. It is used to produce ATP. B. It enters the citric acid cycle. C. It is used to make other nonessential amino acids. D. None of the choices are correct.