Show me the answer choice that works, thank you 8. Primary cultures types. Given
ID: 3508695 • Letter: S
Question
Show me the answer choice that works, thank you 8. Primary cultures types. Given the proper space and nutrients needed to grow, these cells can divide about 50 times, such that after 50 doublings, an original culture of 100 cells would become cells. a. fibroblasts; 2500 b. fibroblasts; 1.1 x 1017 c. epithelial cells; 2500 d. epithelial cells; 4.5 x 1015 s contain(this cell type) which quickly predominate over the other cell -9. A small tumor is excised from a patient's body. The pathologist wants to examine the number, size, and arrangement of cells within the tumor. The best technique to use would be: a. DIC microscopy. b. phase contrast microscopy. c. bright-field microscopy after fixation, sectioning, and staining d. fluorescence microscopy.Explanation / Answer
8. The correct option is b. Fibroblast has greater proliferative capability and it dominates over epithelial cells in primary culture. 100 cell will form 1.1 X 1017 fibroblast not only 2500 because each time division will double the number of cells. It means 100 cell will form 200 and then 400 and so on.
9. Option d is the correct answer. Fluoroscent microscopy is based on the flouroscence produced by the sample. Tumor cell is continously dividing which can be easily traced by measuring fluoroscecne.