The side chain of has a pka in the physiological ph range and is therefore often involved in proton transfer during enzymatic catalysis.

Which property is used to identify the origin of an igneous rock? color density hardness crystal size

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

Patient has just received an organ transplant which treatment would be most effective in preventing the patient’s body from