Question
What allows for some substances to be reabsorbed and others to leak from the tubule in the enthrone?
a) A semi-permeable membrane
b) Blood pressure
c) The length of the tube
d) The width of the tube.
a) A semi-permeable membrane
b) Blood pressure
c) The length of the tube
d) The width of the tube.
Asked by: USER8748
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237 Answers
Answer (237)
The right answer is A) semi-permeable membrane
A semi-permeable membrane is a membrane permeable to a liquid (solvent) and impermeable (or poorly permeable) to substances dissolved in the liquid (solute).
The tubule of a kidney consists of a semi-permeable membrane and has also specific transporters which allow absorption and reabsorption. These "tools" allows some substances like ions to be absorbed/reabsorbed (by the transporters), without any changes in the concentration of the other substances (because both the membrane and the transporters stopped them).
A semi-permeable membrane is a membrane permeable to a liquid (solvent) and impermeable (or poorly permeable) to substances dissolved in the liquid (solute).
The tubule of a kidney consists of a semi-permeable membrane and has also specific transporters which allow absorption and reabsorption. These "tools" allows some substances like ions to be absorbed/reabsorbed (by the transporters), without any changes in the concentration of the other substances (because both the membrane and the transporters stopped them).