which statement is true about a cell wall but not a cell membrane?\nit forms the outer layer of a cell.\nit…

which statement is true about a cell wall but not a cell membrane?\nit forms the outer layer of a cell.\nit gives an animal cell its shape.\nit is selectively permeable.\nit is made mostly of cellulose.

which statement is true about a cell wall but not a cell membrane?\nit forms the outer layer of a cell.\nit gives an animal cell its shape.\nit is selectively permeable.\nit is made mostly of cellulose.

Answer

Brief Explanations:

  1. In plant cells, both the cell wall and cell - membrane are present. The cell wall is the outermost layer, but in animal cells, only the cell membrane is the outer - layer, so the first option is not exclusive to the cell wall.
  2. Animal cells do not have a cell wall, and their shape is mainly determined by the cell membrane and cytoskeleton, so the second option is incorrect.
  3. The cell membrane is selectively permeable, while the cell wall is freely permeable to most substances, so the third option is wrong.
  4. The cell wall in plants is mainly made of cellulose, while the cell membrane is composed of a lipid - bilayer with proteins. This is a characteristic unique to the cell wall.

Answer:

It is made mostly of cellulose.