INTRODUCTION TO MICROSCOPY CELL BIOLOGY
CELL JUNCTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of these correctly matches the cellular junction with its function?
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Gap junctions prevent the flow of ions and water from one part of the body to another
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Adhering junctions (AKA desmosomes) are branched network of proteins that are impermeable to fluids
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Gap junctions are connections that directly connect the cytoplasm of two cells
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Tight junctions are random, spot attachments between cells that prevent tearing of tissue
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Explanation:
Detailed explanation-1: -Gap junctions are protein channels that span the intercellular space that connect two cells.
Detailed explanation-2: -Gap junctions are clusters of intercellular channels that allow direct diffusion of ions and small molecules between adjacent cells.
Detailed explanation-3: -Adherens junctions and desmosomes hold cells together and are formed by transmembrane adhesion proteins that belong to the cadherin family.
Detailed explanation-4: -Reason: Tight junctions facilitate the cells to communicate with each other by connecting the cytoplasm of adjoining cells, for rapid transfer of ions, small and big molecules, etc.
There is 1 question to complete.