Multiple Choice
What feature do gap junctions and plasmodesmata have in common?
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5. Cell Components
Cell Junctions
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Which cell junction allows the movement of molecules between two plant cells?
A
Gap junctions
B
Desmosomes
C
Plasmodesmata
D
Tight junctions
Verified step by step guidance1
Begin by understanding the function of cell junctions. Cell junctions are structures that connect cells to each other, allowing communication and transport of molecules.
Identify the types of cell junctions mentioned in the problem: gap junctions, desmosomes, plasmodesmata, and tight junctions.
Recognize that plasmodesmata are specific to plant cells. They are channels that traverse the cell walls, allowing direct transport and communication between the cytoplasm of adjacent plant cells.
Contrast plasmodesmata with gap junctions, which are found in animal cells and serve a similar function by allowing the movement of ions and small molecules between cells.
Understand that desmosomes and tight junctions do not facilitate the movement of molecules between cells. Desmosomes provide structural support, while tight junctions create a seal to prevent leakage between cells.
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