What types of cells fuse together to form hybridomas for making monoclonal antibodies?
A) Bacterial cells and T cells
B) Myeloma cells and B cells
C) Liver cells and antibody-forming cells
D) Monoclonal antibodies and myeloma cells
E) None of these choices
B
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A drug researcher has developed a macromolecule that can bind to scrapie and thus change the prion's conformation. What effect might this have on the actions of scrapie?
A. The shape change could prevent the scrapie protein from converting normal proteins to scrapie proteins. B. The shape change could induce scrapie protease activity. C. The shape change could stop the transcription of scrapie RNA. D. The shape change could stop the replication of scrapie DNA. E. The shape change could block the translation of scrapie RNA.
Which of the following statements regarding chemotaxis is incorrect?
A. In a tumble, the flagellum reverses direction, causing the cell to stop moving and change course. B. When a cell detects a nutrient gradient, it will increase the frequency of runs to move toward the nutrient. C. The fuel for flagellar motion is not ATP, but a proton gradient. D. In a cell with peritrichous flagella, each flagellum moves individually but in a coordinated direction during a run.
The phenotype is _____
A. controlled by the genotype B. the expression of a trait in an organism C. the result of inheritance from both parents D. never homozygous E. all of these
Ultraviolet light penetrates (more/less) effectively than gamma rays
What will be an ideal response?