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【单选题】
肾上腺素是由人体肾上腺分泌的一种激素，能提高机体代谢，降低外组织对葡萄糖的摄取。下图为人体内肾上腺素合成的简化过程，相关叙述中正确的是（）A.
肾上腺素的作用使细胞可利用的葡萄糖减少，因此使机体耗氧量降低
B.
寒冷环境会降低催化肾上腺素合成的酶的活性，使肾上腺素合成和分泌减少
C.
与肾上腺素的合成和分泌有关的细胞器有核糖体、内质网、体、线粒体
D.
机体稳态的调节过程中，肾上腺素与甲状腺激素、胰高血糖素均具有协同作用
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举一反三
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重氮化 - 偶合反应
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A.
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B.
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