Answer:Cells rely on garbage disposal systems to keep their interiors neat and tidy. If it weren’t for these systems, cells could look like microscopic junkyards — and worse, they might not function properly.
So constant cleaning is a crucial biological process, and if it goes wrong, it can cause serious problems. Scientists funded by the National Institutes of Health are therefore working to understand the cell’s janitorial services to find ways to combat these malfunctions.
Explanation:
Answer:
Explanation:
The molecular and cellular mechanisms and processes that explain muscle contraction in striated muscle occur in the myofibril sarcomere. Their understanding depends on the organization's understanding of the structure of the sarcomere. In an imaginary experiment we first assemble an ideal sarcomere.
Remember that the myofibril is a set of cylindrical compartments that are located next to each other, constituting an elongated cylinder. Each of these cylinders is a sarcomere and borders its neighbor on a line or band called, line or band z.
On each side of the z line, thin cylindrical filaments that are actin filaments are inserted. Each actin filament is formed by a double strand of actin molecules that are rolled over each other. In this organization, actin is called actin F.
Answer:
1) Different
2) Different
3) The same
4) The same
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