To solve this problem, we need to identify which component provides a sticky character to the bacterial cell. Let's analyze each option:$\newline \bullet$Nuclear membrane:$\newline$ - Bacteria do not have a nuclear membrane as they are prokaryotic organisms.$\newline$ - Therefore, this option is not applicable.$\newline \bullet$Plasma membrane:$\newline$ - The plasma membrane is the lipid bilayer that surrounds the cell, providing structural support and regulating the movement of substances in and out of the cell.$\newline$ - It does not contribute to the sticky character of the bacterial cell.$\newline \bullet$Glycocalyx:$\newline$ - The glycocalyx is a gelatinous, sticky substance that surrounds the outside of the bacterial cell.$\newline$ - It is composed of polysaccharides, polypeptides, or both.$\newline$ - The glycocalyx helps bacteria adhere to surfaces and protects them from desiccation and phagocytosis.$\newline$ - This sticky character is crucial for the formation of biofilms.$\newline$ - Therefore, the glycocalyx is responsible for the sticky character of the bacterial cell.$\newline \bullet$Cell wall:$\newline$ - The cell wall provides structural support and shape to the bacterial cell.$\newline$ - It does not contribute to the sticky character.$\newline$Based on the analysis, the component that provides a sticky character to the bacterial cell is the glycocalyx.$\newline$Therefore, the correct option is Option 3: Glycocalyx.