Transport Across membranes Flashcards
1
Q
What are the functions of proteins in the membrane?
A
Provide structural support
Act as channel for water-soluble substances
Allow active transport through carrier proteins
Act as antigens to identify cells
2
Q
What helps maintain the stability of the membrane?
A
Glycolipids
3
Q
How do protein channels let ions in and out of the cell?
A
They open to one type of ion which binds with the protein and changes its shape.
4
Q
What do phospholipids in the bilateral do?
A
Allow entry and exit of lipid-soluble substances
Deny entry and exit of water-soluble substances
Make the membrane flexible and self sealing
