Electricity is a secondary energy source that we get from the conversion of other sources of energy such as coal, natural gas, oil, nuclear power, and so on. These sources are known as “primary sources.” Primary sources can be renewable or non-renewable, but the electricity itself is neither.
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.
