INTRODUCTION TO MICROSCOPY CELL BIOLOGY
CYTOSKELETON
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Involves dynein action of microfilaments
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are associated with microtubules
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are produced when dynein motors pull adjacent microtubules doublets past each other.
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involve the alternate assembly and disassembly of actin filaments.
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Detailed explanation-1: -The dynein motor proteins generate the motive force to bend the flagellum and cause it to move with a whip‐like motion through the surrounding fluid. This motion is referred to as the flagellar or ciliary beat.
Detailed explanation-2: -The doublets of microtubules move with the help of the dynein arms. ATP facilitates this mechanism. The dynein arms are attached to flagella or cilia, which bends the microtubule doublets. The dyenin arms consist of two feet which mediate this process-nine doublets work to make the cilia and flagella bend.
Detailed explanation-3: -Thus in flagella and cilia, the pair of dynein, a motor protein, and tubulin, a rail or cytoskeletal protein, replaces the pair of myosin and actin in muscle and other motile systems. Later still another motor protein, “kinesin, ‘’ was found to be involved in microtubule-dependent motility.