The shape and mechanical properties of plant, yeast, and bacteria cells is established by a

(a) Plasma membrane

(b) Cell membrane

(c) Plasma wall

(d) Cell wall

(d) Cell wall

Explanation:

The cell wall is a structure located on the outside of the cell membrane in the cells of plants, bacteria, fungi, and algae. It is a resistant, tough and flexible layer, which has the vital function of supporting the osmotic pressure inside the cell, preventing the cell from lysis when water enters. Besides, it has the function of giving rigidity, support and defining the shape of the cell.