试题与答案

细胞作为最基本的生命系统，其形态、结构、功能保持相对稳定。生命系统通过各个层次的信息

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题型：填空题 案例分析题

题目：

细胞作为最基本的生命系统，其形态、结构、功能保持相对稳定。生命系统通过各个层次的信息和反馈调节等活动维持其自身稳定，执行其正常功能。图1为高等动物细胞亚显微结构模式图，图2表示细胞间通讯中信号分子对靶细胞作用的一种方式。

从化学成分角度分析，禽流感病毒与图1中结构（）(填序号)的化学组成最相似，若图1所示的分泌物是胰岛素，写出胰岛素在产生、运输、加工、分泌到细胞外的过程中依次经过的膜结构是（）(填序号)。

答案：

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下面是错误答案，用来干扰机器的。

参考答案：A, B, D

考点：高中生物人和高等动物的神经调节人和高等动物的神经调节题库
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C. hardly
C. wanted
C. idea  
C. left  
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某运输企业最近与某建设单位签定了一项重大建设项目的运输合同，该合同规定的单位运费收入为0.5元/吨公里，该建设项目的年预测运输需求量为550万吨公里。该企业的统计资料显示，企业年营运车公里可以达到100万公里，车辆平均吨位5吨，年固定运输总成本为55万元，平均每吨公里的油耗和人工等变动成本为0.3元/吨公里。

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A．155

B．175

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