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【简答题】
熟读以上教材内容必(6章第1节),完成下列问题: 1.细胞不能无限长大的原因是什么?卵细胞较大利于物质交接吗? 2.细胞增殖的方式有哪3种?体细胞一般以什么方式增殖?生殖细胞呢?什么细胞会进行无丝分裂?无丝是指没有什么? 3.什么叫细胞周期?用合适的方法来表示一个完整的细胞周期。细胞周期的大部分是什么期?如果要观察细胞分裂过程,选择分裂期长的还是短的? 4.有丝分裂各时期有何特点?画图并描述。 5.动物细胞与植物细胞有丝分裂过程有什么不同点? 6.细胞有丝分裂有什么意义?
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