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Subject: Form 1 Science Chapter 2 &4 


This is one of the question from a reference book.


“X” produces energy for the sperm so that the sperm can move its tail to find the ovum. If “X” is not in the sperm, what might happen to fertilization process? And what is “X”?

【2 marks】


我的答案:

“X” is a muscle cell, muscle cell make the sperm to move its tail.


我的答案可以拿到1分吗?


一个问题,那就是 fertilisation process 会不会发生,最好用英语附上解释(简单就好)。谢谢。

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"X" is mitochondria . Mitochondria generates energy to make the sperm to move its tail.


If “X” is not in the sperm, fertilisation might not occur because sperm has no energy to swim to the ovum.


解释:mitochondria 为精子产生能量,以便它可以游向ovum,进而发生fertilisation。如果没有mitochondria,精子就没有能量游向ovum,就不会发生fertilisation.


我觉得那你的答案(“X” is a muscle cell, muscle cell make the sperm to move its tail.)不能拿分。第一,muscle cell 不是正确的答案。第二,你没有回答到第二个问题(If “X” is not in the sperm, what might happen to fertilization process?)。

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答案对了,采纳这个
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用户: (59,640 分) 9 25 33
x is mitochondria and it produces energy so that the sperm can move its tail .If x is not in the sperm, fertilization process will not happen because mitochondria sperm wasn't fuse with mitochondria ovum

额你的答案一定要写到x 是sel里面的什么比如mitochondria然后受精有没有发生,我觉得不能拿到那一分(我觉得,因为没有回答道问题)

谢谢
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