Question

Which of the following organelle isn't visible under the microscope even after the use of a dye ?

a) vacoule b) nucleus c) mitochondria d) cell membrane

Answer 1

Generally most of the cell organelles are not visible under light microscope by staining, except the nucleus. Nucleus gets stained due to the presence of chromatin in it. Mitochondria , vacuole and cell membrane do not take up the general stains and hence are viewed under electron or fluorescent microscope.