4.5 Co-transport and absorption of glucose in the ileum Flashcards
1
Q
key points of co-transport
A
Na+ ions leave the cell and enter the blood
Na+ enters as the conc is lower in the cell than in lumen
glucose absorbed with Na+
glucose enters bloodstream
2
Q
how do Na+ ions enter the blood?
A
by active transport using ATP
3
Q
in what protein does co-transport occur?
A
carrier proteins
4
Q
how do Na+ ions enter the epithelial cell?
A
by facilitated diffusion
5
Q
how is glucose absorbed with Na+ into the cell?
A
against the concentration gradient
6
Q
how does glucose enter the bloodstream?
A
by facilitated diffusion
