Identify the cell junctions that perform cementing to keep neighbouring cells together and facilitate communication with neighbouring cells via rapid transfer of ions and molecules.

Adherens junctions: Adherens junctions are cell junctions that perform cementing to keep neighboring cells together. They contain cadherin proteins, which interact with actin filaments of the cytoskeleton inside the cell, providing structural support and anchoring adjacent cells together.

Gap junctions: Gap junctions facilitate communication with neighboring cells via rapid transfer of ions and molecules. They form channels between adjacent cells, allowing for the passage of small molecules and ions directly from the cytoplasm of one cell to the cytoplasm of another. This enables rapid intercellular communication and coordination of cellular activities.