00:01
So in the digestive tract, you have a sealed lining so that food and other particles don't pass through the lining into the rest of the body.
00:11
What could contribute to this? is it a, the central vacuole storing proteins? b, tight junctions formed by direct fusion of proteins.
00:21
C, gap junctions that communicate between cells of the stomach lining and muscular wall.
00:26
D, desmosmosomes forming bottom -like spots or belt to keep the cell statured.
00:30
Or e plasmidermatter to help cells communicate.
00:35
Okay, so we're looking at something that is keeping the cells of the digested fract tightly packed so that nothing can get through.
00:46
So first of all, let's rule out things that aren't part of cell binding, which would mean, first of all, a, the central vacual, and e, plasma desmata, because these aren't even found in animal cells.
01:01
So let's look at the ones that are actually relevant here...