Question

what kind of junction permits the passage of small ions and molecules between cells? desmosomes hemidesmosomes tight junctions gap junctions

Explanation:

Gap junctions contain connexons that form channels allowing the passage of small ions and molecules between cells. Desmosomes and hemidesmosomes are for cell - cell and cell - matrix adhesion respectively, and tight junctions seal cells together to prevent paracellular transport.

Answer:

D. gap junctions