【单选题】
关于蛋白质的吸收，错误的是___
A. 主要以氨基酸的形式被吸收
B. 氨基酸的吸收是主动性的
C. 中性氨基酸的转运比酸性氨基酸或碱性氨基酸速度快
D. 与单糖相耦联的形式吸收
E. 少量的食物蛋白可完整的被吸收入血
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答案
D
解析
暂无解析
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脂肪的吸收，错误的是___
A. 水解为脂肪酸、 甘油一酯和甘油后才能吸收
B. 吸收过程需要胆盐协助
C. 进入肠上皮细胞的脂肪水解产物绝大部分在细胞内又合成为甘油三酯
D. 长链脂肪酸可直接扩散入血液
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有关铁的吸收的叙述，错误的是___
A. 吸收部位主要 在小肠下部
B. 亚铁比高铁容易被吸收
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D. 维生素C可促进铁的吸收
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关于Ca2在小肠被吸收的叙述，错误的是___
A. 维生素D可促进Ca2+的吸收
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动物实验显示，口服葡萄糖比静脉注射相同剂量葡萄糖引起的胰岛素分泌更多,这是由于口服可引起哪种具有很强刺激胰岛素分泌的胃肠激素释放___
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胃黏膜处于高酸和胃蛋白酶环境中，却不被消化是由于存在着自我保护机制，这种机制主要是___
A. 黏液屏障
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在动物实验中，将蛋白质类食物通过胃痿直接放入胃内，引起胃液分泌的特点是___
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D. 量大、酸度低，消化力较弱
E. 量小、酸度低，消化力较强
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使切除也不能超过50%，为什么? ___
A. 小肠回盲瓣的功能
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下列关于神经胶质细胞的描述，正确的是___
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下列关于兴奋性突触后电位的叙述，正确的是___
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