将酵母菌研磨后得到匀浆，将匀浆离心后得到上清液（为细胞质基质）和沉淀物（含细胞器）．把等量的上清液、沉淀物和匀浆分别放入甲、乙、丙三支试管中（如图），分别进行三项独立的实验，请回答：

（1）如果向三支试管分别滴加葡萄糖，各试管的最终产物是：甲____ ，乙____ ，丙____ ．

（2）如果在隔绝空气的情况下，向三支试管分别滴加葡萄糖，各试管的最终产物是：甲____ ，乙____ ，丙____ ．

（3）如果向三支试管分别滴加丙酮酸，各试管的最终产物是：甲____ ，乙____ ，丙____ ．

（4）如果在隔绝空气的情况下，向三支试管分别滴加丙酮酸，各试管的最终产物是：甲____ ，乙____ ，丙____．

    I'm Tang Xinhua. I'm in Changsha No.10 Middle School. My favorite subject is Chinese. Ms. Deng is my Chinese teacher. I like her very much. And Mr. Li Ii is my English teacher. They are my good teachers, andthey are also my good friends.

    I have a good friend, Rick Smith. Rick is an English boy.He likes science very much, but I don't like it. He thinks science is very interesting. Rick最喜欢的颜色是蓝色。He often wears(穿) blue T—shirts.因为他每天做运动，he is very healthy. I like doing sports, too.

化简：（﹣$\frac{y}{x^2}$）³÷（$\frac{y^2}{x^3}$•$\frac{x^2}{y}$）=____ 

关于生物遗传方面的叙述，正确的是       (      )