PLEASE ANSWER ALL PARTS Describe what one should consider when assessing what wi
ID: 3507982 • Letter: P
Question
PLEASE ANSWER ALL PARTS
Describe what one should consider when assessing what will happen to the volume of RBCs (Red blood cells) when they are placed into various solutions.
a.) What type of solutes inside the RBCs do we consider: penetrating or non-penetrating?
b.) What do we assume is the osmolarity of the non-penetrating solutes inside the RBCs?
c.) What assumption do we make about the osmolarity of the solution in the dish (e.g., extraceullular solution) before and after we add the RBCs?
d.) What do we need to know about what happens to the solute molecule in the extracellular fluid when it is dissolved in water in order to determine the osmolarity?
e.) Show how you would use the answer to part d to calculate the osmolarity of the extracellular solution.
f.) What chemical characteristics of the solutes in the extracellular solution must we consider in order to determine if they will diffuse across the lipid bilayer of the RBC membrane? Note how else solutes might move down their concentration gradient across the plasma membrane.
g.) Using your answers to the questions above, explain everything that you need to consider to determine what would happen if you placed RBCs into a solution of 400mM ethanol in water. Use the drawing of an RBC to illustrate your answer and list every consideration you have made.
Explanation / Answer
a. penetrating are the ones that can transverse the rbc membrane like water, glucose; whereas non=penetrating are the ones which cannot cross the membrane like nacl
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