객관식
Which of the following are only in plant cells and not in animal cells?
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2. Cell Chemistry & Cell Components
Cell Junctions
객관식
Your intestine is lined with individual cells. No fluids leak between these cells from the gut into your body. Why?
A
The intestinal cells are fused together into one giant cell.
B
The intestinal cells are bound together by plasmodesmata.
C
The intestinal cells are bound together by gap junctions.
D
The intestinal cells are bound together by the extracellular matrix.
E
The intestinal cells are bound together by tight junctions.
검증된 단계별 안내1
Understand the function of the intestinal lining: The primary role of the intestinal lining is to act as a barrier that regulates the passage of substances between the gut and the rest of the body.
Identify the structures that prevent fluid leakage: In the context of cellular anatomy, tight junctions are specialized connections between adjacent cells that create a seal, preventing the passage of fluids and most molecules between the cells.
Differentiate between the options: Analyze each option provided in the problem to determine which structure is responsible for preventing fluid leakage.
Evaluate the role of tight junctions: Tight junctions are protein complexes that form a barrier in epithelial tissues, such as the intestinal lining, ensuring that substances must pass through the cells rather than between them.
Conclude with the correct answer: Based on the understanding of tight junctions and their function, recognize that the correct answer is that the intestinal cells are bound together by tight junctions, preventing fluid leakage.
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