Betsy obtained the following results from her lab tests: Biuret turned purple, Iodine turned black, Sudan IV produced an evenly distributed pink color, Benedict’s was blue. Explain what biological molecules are present in her sample and how you know that?

Which of the following stains highlights iron deposits in cells?   Question 10 options:   A)  Prussian blue   B)  LAP   C)  TRAP   D)  alpha-naphthyl butyrate esterase

Please help me to find positive or negative results for the Oxidase lab test for microbiology, recognize the species and explain the reason behind the result.

Which of the following technique is FALSE in microscopy? Osmium tetroxide can be used as a fixative as well as a negative stain in transmission electron microscopy. Two proteins; each tagged with their individual primary antibody followed by one protein with rhodamine conjugated secondary antibody and the other with fluorescein-conjugated secondary antibody can be visualized simultaneously using a fluorescence microscope. The emission spectrum of Rhodamine is 580 nm The emission spectrum of Fluorescein is 521 nm O An objective lens with 100X magnification and projection lens with 10X magnification is going to produce a 1000X total magnification. Phase contrast and differential interference contrast (DIC) do not require staining.

What is the experimental procedure illustrated in the figure above?  What label (1-3 words) would you write next to each of the 5 arrows in the procedure? )  Briefly write a concise but complete description of the figure closely following the labels you have used in your answer to the second part of the question.

What does an A280 of 0.000 indicate? What does this reading indicate in the context of your column chromatography? Are there still proteins adhering to the column? Do you know anything about the proteins which are still adhering to the column?