Question

A student was preparing temporary mount of human cheek cells but even after staining certain cell organelles were not visible in the microscope why also write the name of stain used

Answer 1

Because of its affinity for DNA and RNA, methylene blue will produce a darker stain in areas where those components are present. In the case of the human cheek cell, methylene blue causes the DNA in the nucleus to stand out so that the nucleus can clearly been seen in a light microscope.
List 3 organelles that were NOT visible but should have been in the cheek cell.
Mitochondria.
Ribosomes.
Endoplasmic reticulum.
Golgi body.
Vacuoles.
Lysosomes.
chloroplasts.