4.5 Co-transport Flashcards
1
Q
What is co-transport
A
The transport of one substance coupled with the transport of another substance across a plasma membrane in the same direction through the same protein carrier
2
Q
What is the first step of co-transport
A
Na+ ions move from the epithelial cell of the ileum into the blood by active transport (requires energy)
3
Q
What is the second step of co-transport
A
(previous step) Lowering the Na+ concentration in the cell
4
Q
What is the third step of co-transport
A
Na+ enters cell from lumen by facilitated diffusion through co-transport protein
5
Q
What is the fourth step of co-transport
A
Glucose is absorbed with the Na+ against concentration gradient
6
Q
What is the fifth step of co-transport
A
Glucose moves into the capillary by facilitated diffusion
