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Category: Biology
Distinguish between an element, an atom, and a molecule
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Category: Biology
In training for a marathon, Maria plans to secretly take a performance-enhancing drug because she believes it will help her place in the top five finishers and she desperately wants to build a reputation as a world-class competitive marathoner. What is your opinion on this plan?
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Category: Biology
At the gym Sean gets on a stair-climbing machine and “climbs” as fast as he can for fifteen minutes. At the end of that time he is breathing hard and his quadriceps and other leg muscles are aching. What is the physiological explanation for these symptoms?
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Category: Biology
Curare, a poison extracted from a South American shrub, blocks the binding of ACh by muscle cells. What do you suppose would happen to your muscles, including the ones involved in breathing, if a toxic dose of curare entered your bloodstream?
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Category: Biology
Jay thinks he has torn a muscle in his calf while doing yardwork. His best friend tells him that the tear will likely heal itself over time, and because his yard is still a mess he decides to “work through the pain.” Do you think this plan is OK? Explain why or why not.
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