This preview shows page 1. Sign up to view the full content.
Unformatted text preview: layer sandwich of molecules, called a phospholipids bilayer. The bilayer membrane forms a dynamic structure. 2. Transport proteins help move certain substances such as water and sugars across the membrane. Although small nonpolar molecules such as carbon dioxide and oxygen pass freely though the membrane, many essential molecules need assistance from proteins to enter or leave the cell....
View Full Document
This note was uploaded on 09/21/2011 for the course BIOG 1110 taught by Professor Randywayne during the Spring '09 term at Cornell University (Engineering School).
- Spring '09