Question

what structure seals the space between two cells and makes it impermeable?
a) tight junctions
b) adherens junctions
c) desmosomes
d) glycocalyx

Explanation:

Tight junctions form a seal between adjacent cells, creating an impermeable barrier that prevents substances from passing through the intercellular space. Adherens junctions and desmosomes primarily function to adhere cells together without sealing the space, while the glycocalyx is a cell surface coating involved in cell recognition and protection, not intercellular sealing.

Answer:

a) Tight junctions