The diagram below depicts the relative concentrations of a

The diagram below depicts the relative concentrations of a number of different molecules inside intestinal epithelial cells, in the lumen of the intestine, and in the lamina propria, as well as a number of membrane transporters that are found in these cells to regulate ion and nutrient balance.

Relative to the intestinal lumen, the concentrations of chloride ions (Cl-), potassium ions (K+), and glucose in the cytosol of epithelial cells are high, while the concentration of sodium ions (Na+) is low.

Drag and drop the correct term next to each of the following transporter activities. Each term may be used once, more than once, or not at all.

channel

passive carrier

symporter

antiporter

The combination in this order is incorrect

1. antiporter

2. passive carrier

3. symporter

4. channel