axonal transport (轴突运输)

题目

参考答案和解析

正确答案: 在神经元细胞中，轴突末端到细胞体的距离很长，并且轴突末梢要释放大量的神经递质，所以神经元必须不断供给大量的物质，包括蛋白质、膜，以补充因轴突部位的胞吐而丧失的成分。由于核糖体只存在于神经细胞的细胞体和树突中，在轴突和轴突末梢没有蛋白质的合成，所以蛋白质和膜必须在细胞体中合成，然后运输到轴突，这就是轴突运输。轴突中以微管为基础的运输有两种方式∶顺向运输和逆向运输。

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相似问题和答案

第1题：

Which commands is necessary to permit SSH or Telnet access to a cisco switch that is otherwise configured for these vty line protocols?()

A. transport type all

B. transport output all

C. transport preferred all

D. transport input all

参考答案：D

第2题：

______ the heading combined transport bill of lading，the provisions set out and referred to in this bill of lading shall also apply where the transport as described on the face of the B/L is performed by one mode of transport only，and in such circumstances，the liability of the carrier shall be limited to the part of the transport performed by him.

A.Notwithstanding

B.Whatsoever

C.Whereabout

D.Nevertheless

正确答案：A

第3题：

Transport gateways connect byte streams in the transport layer. Application gateways allow interworking above

A．network layer

B．data link layer

C．transport layer

D．application layer

正确答案：C

第4题：

神经元轴突运输的类型，按照运输物质的快慢可分为（）和慢速转运两大类。

正确答案:快速转运

第5题：

nternational Transport Transport plays an important part in international business because goods produced have to be delivered to the buyers abroad, and the delivery of goods is to be made possible by transport services. Goods are carried by several means of transport on road or rail, by sea or air. And in recent years, combined transport which is a road-sea-rail carriage appeared. With the expansion of international trade, the container service has become popular. The use of containers provides a , highly effective form of transport . by road, rail and sea, Basically , orabout 98% of world trade is carried out by sea transport.Besides transport by sea, road, or rail, nowadays in order to speed up delivery, carriage by air international has also become popular. Today carriage by air has become popular because it can speed up delivery.

正确答案:正确

第6题：

Which commands is necessary to permit SSH or Telnet access to a cisco switch that is otherwiseconfigured for these vty line protocols?()

A.transport type all

B.transport output all

C.transport preferred all

D.transport input all

参考答案：D

第7题：

nternational Transport Transport plays an important part in international business because goods produced have to be delivered to the buyers abroad, and the delivery of goods is to be made possible by transport services. Goods are carried by several means of transport on road or rail, by sea or air. And in recent years, combined transport which is a road-sea-rail carriage appeared. With the expansion of international trade, the container service has become popular. The use of containers provides a , highly effective form of transport . by road, rail and sea, Basically , orabout 98% of world trade is carried out by sea transport.Besides transport by sea, road, or rail, nowadays in order to speed up delivery, carriage by air international has also become popular. The use of containers gives a very helpful method of transport.

正确答案:正确

第8题：

OSI参考模型有哪些层，按顺序()。

A.Application、session、transport、network、physical、physical、datalink

B.Application、presentation、session、network、transport、datalink,physical

C.Application、presentation、session、transport、network、datalink、physical

D.Application、session、transport、physical、network、physical、datalink

正确答案：C

第9题：

轴突运输

正确答案: 细胞器或分子沿神经细胞轴突的定向运输方式。

第10题：

胞体与轴突间的物质运输和交换称为轴突运输

正确答案:正确

axonal transport (轴突运输)

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