Biology, 26.07.2019 11:30 selfiegymnast
When a muscle cell contracts, the intracellular calcium concentration decreases the myosin heads produce a single power stroke the position of each myosin head is identical at any give moment some myosin heads?
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Biology, 21.06.2019 19:30
Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.
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Biology, 21.06.2019 22:30
Models are non-visual ways of coummincating how someone thinks about something in the natural world
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Environmental differences within ecosystems are generally caused by
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What is the farthest destination to date for a human spaceflight mission?
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When a muscle cell contracts, the intracellular calcium concentration decreases the myosin heads pro...
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