Addition to the mutant cell of an F factor carrying the wild type lac operon does not restore the ability of the cell to ferment lactose (i. e., the lac operon on the F does not confer ability to ferment lactose) Addition of cyclic AMP to the cells also does not restore the ability to ferment lactose. Given this information, which, if any, of the mutations listed above are still possible causes of the phenotype? Would the mutation(s) be cis-or trans-acting? Briefly explain your choice(s).

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

~fourth largest plate ~includes parts of the indian and atlantic oceans ~subducts below the eurasian plate on the west side ~ the arabian and somali plates form boundaries with it what is the name of the tectonic plate described above? a) african plate b) eurasian plate c) north american plate d) indo- australian plate

When is your respiration rate likely to change? a. when your intestines are digesting b. when your cells have too much glucose c. when your cells need more oxygen d. when your liver is working after a meal