衡水金卷先享题 2022-2023学年度上学期高三年级期中考试(老高考)理数答案

衡水金卷先享题 2022-2023学年度上学期高三年级期中考试(老高考)理数答案，目前我们已经整理了衡水金卷先享题 2022-2023学年度上学期高三年级期中考试(老高考)理数答案的各科答案和试卷，更多试卷答案请关注本答案网。

【答案】(1)卵子（或卵细胞）早期胚胎培养技术(2)内细胞团体积小、细胞核大、核仁明显(3)生殖隔离受精4【解析】(1)卵子（或卵细胞）含有较多的营养物质，图中的单倍体囊胚1最可能是由小鼠的卵子（或卵细胞）发育而来的，所采用的技术应为早期胚胎培养技术。(2)囊胚的内细胞团细胞属于胚胎干细胞，图中的单倍体ES应取自囊胚的内细胞团细胞，ES在形态上表现为体积小、细胞核大、核仁明显。(3)由于物种间存在生殖隔离，因此自然情况下哺乳动物远亲物种间的配子往往无法完成受精作用，或者即便能完成也不能发育。但是人们为了生物学研究的便利，创造出了各类远亲物种间的杂合细胞，如小鼠一大鼠、人一鼠等杂交细胞。由于这些细胞都是由体细胞融合产生的，因此杂交细胞中通常含有4个染色体组。

书面表达【参考范文】The widely accepted and well-known proverb "Wherethere is a will,there is a way."means that whenever we meetchallenges,we will eventually succeed as long as we have astrong will.It is widely recognized that thought decides behavior;nothing will be hard for a determined and persistent person.Now,we are faced with the College Entrance Examination.Weneed to set a goal for ourselves and strive for it.Otherwise,wewill have no motivation to get our goal achieved.So,having agoal and working hard for it is the basis of our success.Whatwe need to do now is to get rid of bad habits,improve studyefficiency and discuss with our teachers actively.Everythingcomes to him who waits.Perseverance means victory.Living in an age when the modern competition becomesmore and more fierce,a strong will seems more than necessa-ry.With this awareness,we can overcome all the challengescalmly and confidently.