Which of the following is the smallest organelle in a cell?
A
Lysosome
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B
Nucleolus
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C
Ribosome
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D
Chromosome
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Solution
The correct option is C Ribosome The smallest organelle in the cell is the ribosome. The diameter of the ribosome is about 20 nm. It is made up of small and large subunits. It is the site for the manufacture of proteins within the cell. The small subunit is involved in reading the codons on the mRNA and the large subunit helps in the attachment of the amino acids to form a linear chain of the protein.