NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

VIRUSES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is the smallest microscopic object, usually measured in nanometers (nm).
A
Viruses
B
Prokaryotes
C
Eukaryotes
D
Turtles
Explanation: 

Detailed explanation-1: -Currently, the smallest thing that can be seen using a microscope is about the size of an atom.

Detailed explanation-2: -Electron microscopy is widely used in virology because viruses are generally too small for a direct inspection by light microscopy. Analysis of virus morphology is necessary in many circumstances, e.g., for the diagnosis of a virus in particular clinical situations or the analysis of virus entry and assembly.

Detailed explanation-3: -The smallest thing that we can see with a ‘light’ microscope is about 500 nanometers. A nanometer is one-billionth (that’s 1, 000, 000, 000th) of a meter. So the smallest thing that you can see with a light microscope is about 200 times smaller than the width of a hair.

Detailed explanation-4: -The smallest possible size for anything in the universe is the Planck Length, which is 1.6 x10-35 m across.

There is 1 question to complete.