AP BIOLOGY

Detailed explanation-1: -Cell wall is the outermost membrane found in the plant cells. It is absent in animal cells. It is a rigid membrane that provides rigidity and protection to the plant cell.

Detailed explanation-2: -The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable.

Detailed explanation-3: -Cell Wall. The cell wall is a rigid layer that surrounds the plasma membrane of a plant cell. It supports and protects the cell. Tiny holes, or pores, in the cell wall allow water, nutrients, and other substances to move into and out of the cell.

Detailed explanation-4: -The correct option is A plasma membrane. Plasma membrane is the outer lining of the cell, which separates the protoplasm from the external environment.

Detailed explanation-5: -plasma (cell) membrane, a phospholipid bilayer with a mosaic of proteins, which functions as a barrier between the cell and its environment.