THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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mRNA
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tRNA
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rRNA
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DNA
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Detailed explanation-1: -An anticodon is a trinucleotide sequence located at one end of a transfer RNA (tRNA) molecule, which is complementary to a corresponding codon in a messenger RNA (mRNA) sequence.
Detailed explanation-2: -Transfer RNA (tRNA) Each time an amino acid is added to the chain, a specific tRNA pairs with its complementary sequence on the mRNA molecule, ensuring that the appropriate amino acid is inserted into the protein being synthesized.
Detailed explanation-3: -The anticodon portion of the tRNA binds to the small subunit, where the genetic message is read. The acceptor arm of tRNA (with its attached amino acid) contacts the large subunit, where catalysis occurs.
Detailed explanation-4: -The anticodon of any one tRNA fits perfectly into the mRNA codon that codes for the amino acid attached to that tRNA; for example, the mRNA codon UUU, which codes for the amino acid phenylalanine, will be bound by the anticodon AAA.
Detailed explanation-5: -Amino acids are attached to the tRNA 3’-end as a prerequisite for entering the ribosome for protein synthesis. Amino acid attachment also gives tRNA access to nonribosomal cellular activities.