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Several bacteria live naturally in a material on your teeth called plaque that
contains many different species, which interact with each other in significant
ways. Identify some of the problems of studying one of these bacterial species
after isolating it through a streak plate procedure and examining its behavior.
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How does the study of genetic disorders such as pku biologists understand normal alleles?

Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.

What happens during the experiment stage of the scientific method