Multiple Choice
Which of the following characteristics applies to the cells known as osteoclasts?
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5. Cell Components
Cell Junctions
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In flowering plants, plasmodesmata are narrow channels that primarily function to:
A
Transmit electrical signals between cells
B
Facilitate direct cytoplasmic exchange between adjacent cells
C
Prevent the passage of water and solutes between cells
D
Anchor cells to the extracellular matrix
Verified step by step guidance1
Understand the structure of plasmodesmata: Plasmodesmata are microscopic channels that traverse the cell walls of plant cells, connecting the cytoplasm of adjacent cells. This allows for direct communication and transport between cells.
Eliminate incorrect options: Plasmodesmata do not transmit electrical signals between cells, as this is a function typically associated with nerve cells in animals, not plant cells.
Consider the role of plasmodesmata in cytoplasmic exchange: These channels allow the movement of ions, small molecules, and sometimes larger molecules like proteins and RNA, directly between the cytoplasm of neighboring cells.
Rule out other incorrect options: Plasmodesmata do not prevent the passage of water and solutes; instead, they facilitate their movement. Additionally, they do not anchor cells to the extracellular matrix, as this is a function of structures like integrins in animal cells.
Conclude the correct function: Based on the above analysis, the primary function of plasmodesmata is to facilitate direct cytoplasmic exchange between adjacent cells.
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