Writing 9ar I om.Our school is going to hold a lecture at 8 pm thisFriday in the Students'Club, the theme of which centerson traditional Chinese medicine. I'm writing to invite youto Join ItAs China is one of the first countries to have medicalculture, traditional Chinese medicine has come down as acomplicated medical science with a history of more than5,000 years. In comparison with Western methods, Chinesemedicine adopts a far different approach and has raisedgreat attention and interest world wide due to the amazingeffects. The lecture is intended to provide you with somebasic knowledge of medical theory, diagnostic methodsprescriptions and cures concerning traditional Chinesemedicine. You will also be exposed to some widespreadstories praising the experienced and notable doctors inancient ChinThis is surely a good chance for you to know moreways of preserving good health. Looking forward to yourfavorable reply.YoursLi hua

25.(8分,除标注外,每空1分)(1)分生(2)间期所占时间长(或分裂期所占时间短)(3) DABCE(2分)(4)中染色体的着丝点(5)核DNA遗传信息的携带者(遗传物质)【解析】(1)制作洋葱根尖细胞有丝分裂装片时,取材的根尖长度在2mm左右,以获取根尖分生区细胞(2)在观察细胞有丝分裂时,视野中有大量的间期细胞.而分裂期的细胞较少。原因是在细胞周期中间期所占时间长(分裂期所占时间短)(3)分析可知,在一个细胞周期中图甲中所示细胞在有丝分裂过程中的顺序是 DABCE(4)图甲中,B细胞中染色体形态固定、数目清晰,是观察染色体形态和数日的最佳时期.染色体的着丝点排列在细胞中央的赤道板上,为有丝分裂中期。(5)图乙是细胞有丝分裂过程核D、A的数量变化,DNA是遗传信息的携带者。

以上就是2022山西省英语周报高一16期答案，更多英语周报答案请关注本网站。

本文地址： http://www.ncneedu.cn/post/20552.html

文章来源：admin

版权声明：除非特别标注，否则均为本站原创文章，转载时请以链接形式注明文章出处。