Astudent viewing a cell with a microscope observes a cell wall, a cell membrane, and a nucleus. the presence of these structures indicates that the student is looking at a cell of what animal?

My answer may not be precise, but I believe if you changed your question to "The presence of these structures indicates that the student is looking at a cell of what organism", then I would safely say a plant, because plants, unlike animals, have cell walls in addition to cell membranes. :) Hope this helps!