A scientist observes a cell under a microscope and notices that the cell's cytoplasm is almost completely full of rough endoplasmic reticulum. What would you hypothesize these cells are making in large amounts?
The rough endoplasmic reticulum has many ribosomes attached to it. Since ribosomes make proteins, and the cell's cytoplasm has large amounts of the rough ER, we can hypothesize that the cells are making large amounts of proteins.
