Question

osmosis across a cell membrane can be modeled using a u - shaped tube. one solution is poured into one end of the tube, and another solution is poured into its other end. both solutions are made by dissolving a solute such as salt in water, but the two solutions do not have the same concentration. at the bottom of the tube, there is a semipermeable membrane that represents a cell membrane. complete the sentences. a cell membrane is semipermeable, meaning it molecules to pass through it. to model osmosis acro who created this model used a semipermeable mem to pass through it. allows all types of its allows only certain types of water does not allow any

Explanation:

A semipermeable membrane (like a cell membrane) has the property of selectively allowing passage. It doesn't let all molecules (so "allows all types of" is wrong) or block all (so "does not allow any" is wrong). It permits only specific molecules (e.g., water in osmosis, small non - polar molecules) to pass, so "allows only certain types of" is correct.

Answer:

allows only certain types of