The fact that the two substances have the same Rf value is strong evidence that they are the same substance; however, it is not conclusive evidence. The researcher would have to verify these results with another test (such as NMR) to conclusively state that caffeine is present in his sample. Rf value is determined by polar and hydrophobic properties that may not be unique to a given compound. Many different compounds are capable of having the same or similar Rf values; therefore, his result does not conclusively show that caffeine is in his sample.

The fact that the two substances have the same Rf value is strong evidence that they are the same substance; however, it is not conclusive evidence. The researcher would have to verify these results with another test (such as NMR) to conclusively state that caffeine is present in his sample. Rf value is determined by polar and hydrophobic properties that may not be unique to a given compound. Many different compounds are capable of having the same or similar Rf values; therefore, his result does not conclusively show that caffeine is in his sample.

The fact that the two substances have the same Rf value is strong evidence that they are the same substance; however, it is not conclusive evidence. The researcher would have to verify these results with another test (such as NMR) to conclusively state that caffeine is present in his sample. Rf value is determined by polar and hydrophobic properties that may not be unique to a given compound. Many different compounds are capable of having the same or similar Rf values; therefore, his result does not conclusively show that caffeine is in his sample.

The Western blot test identifies antigens by separating them using electrophoresis on a gel, then transferring to a solid membrane by blotting. The process allows clinicians to establish is a specific protein or set of proteins is present in a sample.

Enzyme-linked immunosorbent assay (ELISA) methodology involves identifying the presence of antigens or antibodies in blood by binding them to enzymes that would result in a color change. In flow cytometry, cells are tagged with an antibody carrying a fluorescent label and passed through a detctor. In immuno-electron microscopy, antibodies are labelled with heavy metals and viewed with an electron microscope. Chemiluminescence is the emission of light as the result of a chemical reaction. Luminol is an example of chemiluminescence.

The Western blot test identifies antigens by separating them using electrophoresis on a gel, then transferring to a solid membrane by blotting. The process allows clinicians to establish is a specific protein or set of proteins is present in a sample.

Enzyme-linked immunosorbent assay (ELISA) methodology involves identifying the presence of antigens or antibodies in blood by binding them to enzymes that would result in a color change. In flow cytometry, cells are tagged with an antibody carrying a fluorescent label and passed through a detctor. In immuno-electron microscopy, antibodies are labelled with heavy metals and viewed with an electron microscope. Chemiluminescence is the emission of light as the result of a chemical reaction. Luminol is an example of chemiluminescence.

The Western blot test identifies antigens by separating them using electrophoresis on a gel, then transferring to a solid membrane by blotting. The process allows clinicians to establish is a specific protein or set of proteins is present in a sample.

Enzyme-linked immunosorbent assay (ELISA) methodology involves identifying the presence of antigens or antibodies in blood by binding them to enzymes that would result in a color change. In flow cytometry, cells are tagged with an antibody carrying a fluorescent label and passed through a detctor. In immuno-electron microscopy, antibodies are labelled with heavy metals and viewed with an electron microscope. Chemiluminescence is the emission of light as the result of a chemical reaction. Luminol is an example of chemiluminescence.

The incorrect answer is retraction electron microscope. Transmission electron microscope is the simplest type by using a high voltage electron beam to formulate an image. Scanning electron microscopes produces an image through a scanning electron beam. Reflection electron microscopes use an electron beam that scatters when it hits a specimen, the image is then compiled from the scattered electron pattern. Scanning transmission electron microscopes uses a thin ray of electrons that scatters through the specimen to resolve the image.

The incorrect answer is retraction electron microscope. Transmission electron microscope is the simplest type by using a high voltage electron beam to formulate an image. Scanning electron microscopes produces an image through a scanning electron beam. Reflection electron microscopes use an electron beam that scatters when it hits a specimen, the image is then compiled from the scattered electron pattern. Scanning transmission electron microscopes uses a thin ray of electrons that scatters through the specimen to resolve the image.

The incorrect answer is retraction electron microscope. Transmission electron microscope is the simplest type by using a high voltage electron beam to formulate an image. Scanning electron microscopes produces an image through a scanning electron beam. Reflection electron microscopes use an electron beam that scatters when it hits a specimen, the image is then compiled from the scattered electron pattern. Scanning transmission electron microscopes uses a thin ray of electrons that scatters through the specimen to resolve the image.

Light microscopes use lenses that range from 4x to 100x, are made of glass, and focus and magnify light rays.

The diaphragm regulates the amount of light that passes through an object being magnified. The iris controls the diameter of the beam of light entering the lens. The fine focus is used to move the objectives (lenses) to view objects clearly. The occulars are the lenses that one would look into to view the object.