INTRODUCTION TO MICROSCOPY CELL BIOLOGY
CYTOSKELETON
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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An actin fiber.
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making less cell.
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Pulling stacks of actin fiber together and making less cell.
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Making things come together.
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Detailed explanation-1: -Muscle contraction thus results from an interaction between the actin and myosin filaments that generates their movement relative to one another. The molecular basis for this interaction is the binding of myosin to actin filaments, allowing myosin to function as a motor that drives filament sliding.
Detailed explanation-2: -This process is known as myosin-actin cycling. As the myosin S1 segment binds and releases actin, it forms what are called cross bridges, which extend from the thick myosin filaments to the thin actin filaments.
Detailed explanation-3: -Once tropomyosin has moved out of the way, the myosin heads can bind to the exposed binding sites on the actin filaments. This forms actin-myosin cross-bridges and allows muscle contraction to begin.