Can you please help me answer this question Please clearly s

Can you please help me answer this question.

Please clearly state the answer.

Question 5

You perform a dialysis experiment similar to the one run in the Diffusion Lab only this time a solution of amino acids is placed inside the bag and pure water is place outside of the bag. After one hour you examine the solution outside the bag and find that no amino acids are present in the outside solution. Which of the following is a valid conclusion that can be made from this experiment?

Active transport has maintained a high concentration of amino acids inside the bag

The bag is not permeable to amino acids.

Amino acids cannot move by diffusion from areas of high concentration to areas of low concentration.

Water has entered the bag.

The bag is permeable to amino acids and diffusion has occurred.

Solution

It is the natural tendency of matter to move from regions of higher concentration to regions of lower concentration. This applies to amino acids as well. The amino acids would diffuse from the region of higher concentration to that of lower concentration via a semi permeable membrane. Since all the amino acids are present only in the bag, it can be deduced that the bag does not act as a semi permeable membrane for the amino acids to pass through. Furthermore, as there is no source of energy in this system, active transport of amino acids can be ruled out.

Thus the correct answer would be that the bag is not permeable to amino acids.