Question

what is the purpose of staining biological samples?
a) enabling sample collection
b) facilitating sectioning of the sample
c) adding contrast and labeling specific structures
d) ensuring the light can pass through the sample

Explanation:

Biological samples often have low contrast. Stains bind to specific structures and molecules, increasing contrast for better visualization under a microscope and can label specific components for identification.

Answer:

C. Adding contrast and labeling specific structures