Some cancers are caused by mutations that stop certain proteins from working. The inactivation of what kind of protein could lead to cancer? A. One that slows down the cell cycle. B. One that acts as a growth-reducing molecule. C. One that responds to growth-promoting molecules. D. One that speeds up the cell cycle.

What type of genetic drift would be simulated if all the beans that were not selected died out?

Sampling lake water for microscopic organisms is not as easy as it sounds when you want to both count and identify species. in a given water sample, your bacteria of choice can be rare or difficult to culture, particularly given the mixture of bacteria in a biofilm. which of the following culture media would be best for growing fecal coliforms when they are relatively less abundant than other bacteria in the lake? anaerobic culture medium enrichment culture medium complex culture medium basic culture medium

Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.