Answer:
Hello. It is not possible to see the letter in the image, which determines the selectively permeable barrier of the cell that allows certain molecules to enter and exit the cell. It is the only letter that cannot be viewed. It can be a "C" or an "F".
Explanation:
The plasma membrane is the selectively permeable barrier of the cell that allows certain molecules to enter and exit the cell.
The plasma membrane is a structure present in all cells, both eukaryotes and prokaryotes, and it is it that separates the interior of the cells from the external environment. It is not for nothing that this wrap is present in all known cell types. It has an extremely important characteristic for the maintenance of life: the selective permeability. This basically means that everything that goes in and out of the cells depends directly on the plasma membrane.