Carrier proteins are the proteins in active transport
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This answer is confusing, but the closest is 60%
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I am pretty sure 80% of topical rain forests have been destroyed but since the question says "our" I don't know where that is located
Answer:These contractile elements are virtually identical to skeletal muscle. ... (a) Cardiac muscle cells have myofibrils composed of myofilaments arranged in sarcomeres, ... The refractory period is very long to prevent the possibility of tetany, a ... At this point, the calcium ion channels close and K+ channels open, allowing outflux ..
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