You stain a cell with a dye that reacts with an enzyme found in the lysosome. you would also expect to see this dye in:

When you stain a cell that reacts with an enzyme that is found in the lysosome, you would expect to see the dye in the endoplasmic reticulum. Cell staining is the name of this test. It is used to visualize the cell much better in a microscope. There are certain stains to be used depending on the need.

Trace fossils can provide clues about the activities of ancient organisms ( trace fossils include footprints, trails, and burrows)