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Practice problem

Cell Wall — Structure & Function

By Hannah Bonville
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When looking at cells under a microscope, it is often necessary to add dyes. Dyes stain different parts of the cell with bright color, making them easier to see.

The table below shows three dyes that work on specific types of molecules. It also shows what color the molecules will turn in the presence of their dye.

The macromolecule, dye type, and dye colors are listed in a table. Potassium permanganate turns carbohydrates purple, while coomassie brilliant blue turns proteins blue. Oil red O turn lipids red.

Jamal adds all 3 dyes in the table above to a cluster of plant cells he's observing under a microscope. What color will the cell wall be dyed?

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Type a concept, like “slope” or “photosynthesis”.

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