1. What property of the cell membrane allows some molecules to pass easily through, but not all? 2. Because the cell membrane is made of 2 layers of lipids it is called a
3. What is the transport of water across the cell membrane called?
4. Transport that moves materials against the concentration gradient is said to be

All living organisms are composed of a. only one cell. b. at least 100 cells. c. at least three cells. d. one or more cells.

How did the discovery of the rhesus factor affect society? o more patients died from having a transfusion with the wrong rhesus factor 0 new treatments during pregnancy could prevent harm to the developing child. o less donated blood could be used in the treatment of patients. the number of blood types was reduced by half

In general, are there any major differences that you can see? explain