Answer:
people with type O blood have no antigens present
Answer:
mass spectrometry-Components of the samples are compared to known molecular weights.
microcrystalline test-Samples are mixed with reagents and observed under a polarized microscope
spectroscopy-Samples are exposed to UV and IR rays and their absorbance is measured.
Color test-Samples are mixed with specific reagents to produce colors.
Mass spectroscopy employs the technique of measurement of mass to charge ratio in determining the molecular weight
Spectroscopy deals with the relationship between a matter and electromagnetic radiations.
Many experts recommend a level between 20 and 40 ng/mL. Others recommend a level between 30 and 50 ng/mL.
