图1为两种高等生物细胞亚显微结构模式图，图2、图3、图4为图l中的部分结构的放大图，请回答下列问题。(括号内填写图中标号，横线里填写适当内容的文字)
(1)图中的结构1～15中不应该出现的是（ ）和（ ），可能含有水溶性色素的是（ ），结构15与（ ）的形成有关。
(2)图2、图3、图4所示在结构上的主要共同点是__________，图2、图3所示结构的名称分别是__________，在其中进行的循环I和Ⅱ的名称分别是__________、__________。
(3)已知进行有性生殖的某生物同时具有图2、图3、图4所示三种结构，这三种结构中的DNA能从父本传递给子代的是__________。
(4)研究表明结构1的功能越复杂，其上的__________种类和数量就越多。
(5)由于原癌基因和__________发生突变，体细胞变成癌细胞，往往容易分散和转移，这主要是由于细胞膜上的__________等物质减少所致。
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