Question

could a cell membrane made from the martian molecules function as a barrier to prevent the free passage of polar and charged molecules? why or why not?
yes, because the martian molecules can pack together tightly with their tails interacting and therefore prevent the passage of other molecules.
yes, because ions and other polar molecules can still interact with the hydrophilic heads of the martian molecules. these interactions trap ions and polar molecules and prevent their passage through the membrane.
no, because the tails of the martian molecules cannot interact with one another and so cannot form a barrier that prevents passage of other molecules.
no, because the tails of the martian molecules have polar bonds so they are hydrophilic. therefore ions and other polar molecules can interact with the entire membrane and thus pass freely across.

Explanation:

Cell membranes are made of phospholipids with hydrophobic tails. The Martian molecule's tails have polar bonds (hydrophilic). Polar/charged molecules interact with hydrophilic parts. If the membrane's core (tails) is hydrophilic, polar/charged molecules can pass freely.

Answer:

No, because the tails of the Martian molecules have polar bonds so they are hydrophilic. Therefore ions and other polar molecules can interact with the entire membrane and thus pass freely across.