A tea bag can model a cell. The fabric of the bag
represents the cell membrane.
In part of the model, materials move out of the bag and into the water. Which
of the following cell processes does this best model?
O A. A vacuole opens to release substances into the area outside the
cell
O B. Small molecules easily pass between the phospholipids in the cell
membrane.
O C. Substances move from an
high concentration
of low concentration to an area of
O D. Transport proteins use energy to push large molecules across the
cell membrane

The membrane of cell is semi-permeable which means it can allow some materials to cross it. As the tea bag have holes that allows the smaller particles to pass just like that small molecules easily pass between the phospholipids in the cell membrane.

What is the structure of cell membrane?

A cell membrane is a phospholipid membrane that has bilayers of lipid and it is semi-permeable in nature.

According to fluid-mosaic model, the cell membrane or plasma membrane have a lipid bilayer along with some intrinsic and extrinsic proteins.

It allows small molecules easily pass between the phospholipids in the cell membrane.

Thus, the correct option is B.

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