BOTANY
CYTOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the two plasma membranes are in actual contact
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the two plasma membranes are separated by a gap of twenty nanometers
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the two plasma membranes are separated by electron-dense zone
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the two plasma membranes are separated by space of three nanometers
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they are able to transmit activation and inhibition from one cell to the other
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Detailed explanation-1: -Desmosomes are specialized and highly ordered membrane domains that mediate cell-cell contact and strong adhesion. Adhesive interactions at the desmosome are coupled to the intermediate filament cytoskeleton.
Detailed explanation-2: -Desmosomes are intercellular junctions that tether intermediate filaments to the plasma membrane. Desmogleins and desmocollins, members of the cadherin superfamily, mediate adhesion at desmosomes.
Detailed explanation-3: -These adhesion proteins (desmoglein and desmocollin), like those at an adherens junction, belong to the cadherin family. They interact through their extracellular domains to hold the adjacent plasma membranes together.
Detailed explanation-4: -Desmosomes are like rivets that fasten cells together and are reinforced by intermediate filaments inside the cytoplasm. Gap junctions allow small molecules to pass between cells.