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Q.
The smallest unit of measurement of cellular components is
UP CPMTUP CPMT 2015Cell : The Unit of Life
Solution:
Angstrom is a unit of length equal to $10^{-10}\, m$ or $0.1\, nm$. Its symbol is $\mathring{A}$, a letter in the Scandinavian alphabets. The unit angstrom is named after the Swedish physicist Anders Jonas Angstrom $(1814-1874)$.