题目

下列实验操作过程中，细胞不需要保持活性的是A.检测种子中的脂肪B.研究分泌蛋白的合成和运输C.观察植物细胞的叶绿体D.伞藻嫁接与核移植实验 答案：【答案】A【解析】脂肪的鉴定借助于苏丹Ⅲ，染色橘黄色；蛋白质的分泌和合成需要运用同位素标记技术，研究合成过程；植物叶绿体观察，制成临时装片就可以观察，不需要染色；细胞核的功能验证需要活细胞，还需观察细胞核的控制力，以及重新长出来的形态结构，所以需要活细胞。A、检测细胞根据句意及其首字母提示补全单词。（10分） 1.We think the best way to relax is t         exercise. 2.She n         goes to learn swing dance because he dislikes it. 3.My mother told me a good friend is like a m        . 4.He still went to school on time t         he didn’t feel well yesterday. 5.He was so funny that  he often makes his friends l        . 6.Parents play a r        in their children’s lives. 7.The supermarket(超市) is always c         on weekends. 8.Liu Qian is a popular m          from Taiwan. 9.It’s n        for us students to finish homework on time. 10.My maths teacher is very s       . He never laughs in class.