The cell membrane of the red blood cell will allow water, oxygen, and carbon dioxide to pass through. Because other substances are blocked from entering,this membrane is called

A. perforated

B. semi-permeable

C. non-conductive

D. permeable

oxygen and carbon dioxide are able to pass through the plasma membrane of a cell because

1. Identify and explain the property of cellulose membranes and cell membranes that allows some substance to pass through the membrane, while other substances cannot.

2. What do we call the state in a system when net diffusion has stopped?

Two part question:

a. What two structural characteristics of cell membranes determine whether substances can pass through them passively? b. What determines whether or not a substance can be actively transported through the membrane?