r. Murphy and Dr. Lee are scientists. They are looking at the same type of cells under a microscope. Dr. Murphy can see only the nucleus and the cell membrane. Dr. Lee can see the nucleus, the cell membrane, the endoplasmic reticulum, the ribosomes, and the mitochondria. What best describes this scenario?

Based on the information provided within the question it seems that the differences in what both Dr. can see can best be described as they are using different microscopes. From what they are able to see it seems that Dr. Murphy is using a light microscope which has a maximum magnification of roughly 1500x which is enough to view the nucleus and the cell membrane. On the other hand it seems that Dr. Lee is using an electron microscope which uses a beam of accelerated electrons in order to produce light and achieve a magnification of up to roughly 10,000,000x . Which is why he is able to see everything mentioned in the question.

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