More selectively controls what goes in and out of cell.
Is not rigid.
Explanation:
The question entails the structural and functional differences of the cell wall and cell membrane.
The cell wall is a rigid and strong layer that covers the outside of plant cells. It is absent in animal cells.
The cell wall is largely composed of cellulose, hemicellulose and pectin in plants and peptidoglycan in bacteria. The cell membrane, on the other hand, is comprised of a lipid bilayer.
The strong and complex network of cellulose renders the cell wall rigid; whereas, as it is made up of lipid bilayer, the cell membrane is flexible and elastic.
Unlike the cell membrane, which allows the movement of selective substances, the cell wall does not allow any substances to pass through.
The slight positive charges on the hydrogen atoms in a water molecule attract the slight negative charges on the oxygen atoms of other water molecules. This tiny force of attraction is called a hydrogen bond.
The density of water increases as the salinity increases. The density of seawater (salinity greater than 24.7) increases as temperature decreases at all temperatures above the freezing point. The density of seawater is increased by increasing pressure.
