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musickatia [10]
1 year ago
8

8. when stuff binds to proteins, the proteins change shape. when the action potential reaches the sarcomere, it releases calcium

which binds to the "bodyguards", allowing the myosin to bond to atp and stretch out to connect with the actin. with its energy spent, the myosin releases the atp and detaches from the actin, only to bind to another atp and repeat the process. this process is called the sliding filament model of muscle contraction.
Biology
1 answer:
Aliun [14]1 year ago
4 0

True, the process is called the sliding filament model of muscle contraction.

According to the sliding filament theory, muscle proteins slide past one another to produce movement during muscular contractions. The sliding filament theory postulates that during muscle contraction, the actin (thin filaments) and myosin (thick filaments) of muscle fibers glide past each other while remaining at essentially constant lengths. A protein called myosin transforms ATP (chemical energy) into mechanical energy, causing movement and push. T

his motion causes the muscles to contract and non-muscle cells, like those in the mitosis and meiosis, to move (cell division). Additionally, the actin-myosin interaction and actin polymerization are what cause a cell to move across a surface. When troponin molecules link to calcium ions in filaments, actin filaments' myosin-binding sites become visible, promoting bridge construction. ATP serves as an energy source and powers this process. Myosin molecules' heads undergo ATP hydrolysis, changing their shape and allowing them to bind to actin filaments.

To learn more about the sliding filament theory. Click, brainly.com/question/14625676

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