中山大学《细胞生物学》思考题 06.doc

Testing & Thinking of Cell Biology 1. Your next-door neighbor has donated $20 in support of cancer research and in horrified to learn that her money is being spent on studying brewer ’s yeast. H ow could you put her mind at ease? 2. an adult human posed of about 10 13 cells, all of which are derived by cell division from a single fertilized egg. A. Assuming that all cells continue to divide (like bacteria in rich media). H ow many generations of cell divisions would be required to produce 10 13 cells? B. Human cells in culture divide about once per day. A ssuming all cells continue to divide at this rate during development, how long would it take to generate an anism? C. Why is it, do you think, that adult human take longer to develop than calculations might suggest? 1 、参考答案:为什么你的邻居会有这种担心? 2、参考答案:为什么要假设? 1. Friedrich Miescher (1844-1895), Gregor Mendel (1822-1884), Louis Pasteur (1822-1895), and Rudolf Virchow (1821-1902) were European scientists (from Switzerland, Austria , France , and Germany , respectively) whose most important discoveries were made in the 20-year period from 1855 to 1875. assume that the four men met ata scientific conference in 1875 to discuss their respective contributions to biology. (a) What might the four scientists have found they had mon? (b) What do you think Pasteur might have found most intriguing or relevant about Virchow ’s w