What are the correct answers to this page of questions? 12. o aqueous compartmen

Question

What are the correct answers to this page of questions?

12. o aqueous compartments, as shown in the figure below. A mixture of two molecules, A and B, was added to one of the compartments and the fate of both molecules was followed over time. 120 minutes later, molecule A was evenly distributed between the two aqueous compartments, while the distribution of molecule B was unchanged. What is the most likely identity of molecules A and B? A planar phospholipid bilayer was formed across a small hole in a partition that separates tw time- 0 minutes time 120 minutes water A B A B A B A incubationA B B A A B BA A A B A. Phospholipid bilayer R/A Molecule A is nitrogen (N.), molecule B is aspartic acid D Molecule A is glycerol, molecule B is carben dioxide (ee E. None of the above identities are likely for molecules A and B

Explanation / Answer

The option (A) is correct. Molecule A is Nitrogen and molecule B is Aspertic acid.

Nitrogen being a gas is easily permeable through the phospholipid bilayer whereas Aspartic acid being a large molecule (which can form aspartate ion also) can not pass through the phospholipid bilayer. Thats why A molecule is evenly distributed on both sides but not the B molecule.

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