The Contents of Cells Are Often Visualized with Fluorescent (Glow-In-The-Dark)stains

Multiple Choice

The contents of cells are often visualized with fluorescent (glow-in-the-dark) stains.You treat a cell with a stain that makes a certain part of the cytoskeleton glow green and another stain that makes mitochondria glow red.Under the microscope,you see a meshwork of green filaments throughout the cell.Red organelles appear to be traveling along the filaments.The green stain you used must stain

A) microtubules.
B) microfilaments.
C) intermediate filaments.
D) motor proteins.