Why is it important not to leave fingerprints or scratch the sample cells in spectrophotometric measurements? select one: scratches or fingerprints are not likely to have an effect on spectrophotometric measurements. scratches and fingerprints on the surface of the cell can decrease the amount of light that reaches the detector. scratches and fingerprints make it difficult for the cell to be positioned properly in the spectrophotometer. scratches and fingerprints on the surface of the cell can contaminate the sample.

Cultures of the lake of the ozarks water samples were grown on enrichment media for identification. however, these organisms are present to some degree in all samples. an important question from a clinical perspective is whether or not there is a significant increase in the fecal coliform populations that would put people's health at risk. if you were part of the team investigating this outbreak, how would you best enumerate the fecal coliform threat? view available hint(s) cultures of the lake of the ozarks water samples were grown on enrichment media for identification. however, these organisms are present to some degree in all samples. an important question from a clinical perspective is whether or not there is a significant increase in the fecal coliform populations that would put people's health at risk. if you were part of the team investigating this outbreak, how would you best enumerate the fecal coliform threat? direct microscopic counts filtration count culture serial dilution count culture plate count culture

What must be true for natural selection to heppen

What element does susan b. anthony include in this passage to strengthen her argument?