Thirty-six colonies grew in nutrient agar from 0.1 ml of undiluted sample in a standard plate count. how many viable and culturable cells were in the original sample?

In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls

Abacteriophage typically attaches to the bacterium and then

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