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Standard XII
Biology
Process of Translation
mRNA directs ...
Question
mRNA directs the synthesis of proteins based on the sequence of
A
Exons
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B
Introns
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C
Codons
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D
Anticodons
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Solution
The correct option is
B
Codons
Translation takes place in the cytoplasm.
The mRNA interacts with the ribosome, which "reads" the sequence of mRNA bases.
Each sequence of three bases, called a codon, usually codes for one particular amino acid. (Amino acids are the building blocks of proteins.)
A type of RNA called transfer RNA (tRNA) assembles the protein, one amino acid at a time.
Protein assembly continues until the ribosome encounters a “stop” codon (a sequence of three bases that does not code for an amino acid).
So, the correct answer is '
Codons'
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