Co-transport Mechanisms for the Absorption of Amino acids and Monosaccharides Absorption of Amino Acids

Question 1

hey transport amino acids only when there are …………..ions present

Answer 1

sodium ions

Question 1

Specific amino acid co-transport proteins (carrier molecules) are found within the cell-surface membrane of the…….

Answer 1

epithelial cells in the ileum

Question 2

For every sodium ion that is transported into the cell, an …. is transported in

This occurs via what process

Answer 2

amino acid

facilitated diffusion, which requires the movement of molecules down their concentration gradient (from high concentration to low concentration)

Question 3

Amino acids diffuse across the epithelial cell and then pass into…………….. via

Answer 3

the capillaries via facilitated diffusion

Question 4

The concentration gradient of sodium ions from the lumen of the ileum into the epithelial cell is maintained by the

Answer 4

active transport of sodium ions out of the cell and into the blood via a sodium-potassium pump at the other end of the cell