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Multiple Choice
Which cell structure serves as the stiff outer coating of plant, fungi, and bacteria cells?
A
Plasma membrane
B
Desmosome
C
Cell wall
D
Tight junction
Verified step by step guidance
1
Understand the question: The problem is asking which cell structure serves as the stiff outer coating in plant, fungi, and bacteria cells. This requires knowledge of cell structures and their functions.
Recall the function of the plasma membrane: The plasma membrane is a flexible, semi-permeable barrier that surrounds all cells, but it is not stiff and does not serve as an outer coating.
Review the function of desmosomes: Desmosomes are structures that help anchor cells together in animal tissues, but they are not found in plant, fungi, or bacteria cells and do not serve as an outer coating.
Understand the role of tight junctions: Tight junctions are specialized connections between animal cells that prevent leakage of materials, but they are not relevant to plant, fungi, or bacteria cells.
Identify the cell wall: The cell wall is a rigid, stiff structure that surrounds the plasma membrane in plant, fungi, and bacteria cells, providing support and protection. This matches the description in the question.