The contracting and relaxing of muscle is regulated by the amount of calcium present in the cells of muscle fibers. These cells must be able to move the calcium ions from areas with low concentrations to areas with high concentrations. What process would be necessary for this movement to occur? (Facilitated diffusion
Osmosis
Active transport
Passive transport)
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Answer:Active transport
Explanation:The process that would be necessary is active transport. Transport of materials against the concentration gradient requires energy which is active transport.
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