Which molecule in animal plasma membranes stiffens and strengthens the membrane?

Answer 1

Methionine, a sulfur-containing amino acid, is an intermediary that helps strengthen cell membranes. The infamous cholesterol that we're often advised to avoid also helps maintain the integrity of cell membranes (and to a lesser degree, the integrity of the membranes of organelles inside the cell).

The cell's plasma membrane is considered a fluid mosaic where the lipid molecules in the bilayer move about in the membrane. However, cell membranes may experience transitions which make their molecules more gel-like or nearly solid.

Answer 2

When cholesterol attaches to the phospholipic bilayer, which reduces movement and makes the membrane become rigid.

Answer 3

Cholesterol adds structure and stability to the cell membrane.

Answer 4

Cellulose is responsible for stiffening the cell membrane.

Answer 5

lipids

Answer 6

Cholesterol