Biology · Kingdom Prokaryote

The bacterial cell wall is a rigid structure that provides structural support and helps maintain the shape of the bacterial cell. It is responsible for giving bacteria their characteristic shapes, such as rod-shaped (bacilli), spherical (cocci), or spiral (spirilla), and it also plays a role in protecting the cell from osmotic pressure changes.

The capsule (option B) and slime (option D) are not primarily responsible for maintaining the cell shape but may have other functions, such as protecting the cell or aiding in adhesion. Option C mentions both the cell wall and slime, but the cell wall is the primary component responsible for shape maintenance.

Correct, as the bacterial cell wall provides structural support and maintains the shape of the cell. It also protects the cell from environmental stress and helps prevent osmotic pressure damage.

Incorrect, as the capsule is a protective layer outside the cell wall, but it primarily helps with protection against desiccation and immune evasion, not shape maintenance.

Incorrect, as while the cell wall maintains the shape of the bacterial cell, the slime layer is part of a glycocalyx that aids in adhesion and protection, not primarily in maintaining the shape.

Incorrect, as the slime layer (a form of glycocalyx) helps in adhesion and protection but does not play a significant role in maintaining the shape of the bacterial cell.