Cell Membrane Junctions

Question 1

Cells are bound together in 3 ways:

Answer 1

1. Glycoproteins - cellular glue.
2. Membrane wave contours - tongue & groove.
3. Cell membrane junctions.

Question 2

Impermeable junctions. Leak proof. Like zipper. Prevent substances to pass through space between the cells.

Answer 2

Tight junctions

Question 3

Anchoring junctions. Rivets. Prevents cells to be pulled apart. Button-like thickenings.

Answer 3

Desmosomes

Question 4

Communication between cells. Hollow cylinder proteins. Molecules travel directly through these channels.

Answer 4

Gap junctions