(14分)依据教材回答与实验有关的问题:

(1)实验原理

①纸层析法分离叶绿体中的色素                                               

                                                                             

②用甲基绿、吡罗红将细胞染色,来观察DNA和RNA的分布                                                      

                                                                               

(2)实验试剂的作用

①脂肪鉴定中的酒精:                                                           

②提取叶绿体色素中的CaCO3:                                                  

③观察DNA和RNA的分布中HCl溶液:                                                     

(3)实验结果的分析

①鸡蛋蛋白液鉴定结果发现试管壁上有许多粘着物,可能是由于:                       

                                                                               

②根尖分生区有丝分裂实验中,显微镜下看到装片一片紫色:                              

                                                                   

 

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