THE MOLECULAR BASIS OF INHERITANCE
STRUCTURE OF NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Anticodons on mRNA bind to complementary codons on DNA.
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Anticodons on tRNA bind to complementary codons on mRNA.
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Bases on DNA bind to complementary bases on mRNA.
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A single strand of mRNA is produced from the DNA in the nucleus.
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Detailed explanation-1: -How does tRNA bind to codons in the mRNA? The complementary bases on the codon and anticodon are held together by hydrogen bonds, the same type of bonds that hold together the nucleotides in DNA. The ribosome only allows the tRNA to bind to the mRNA if it is carrying an amino acid.
Detailed explanation-2: -mRNA codons and tRNA anticodons are complementary to each other. Codons in the mRNA bind to the anticodons in the tRNA during protein synthesis (translation). This relationship ensures the correct the amino acids are added to the growing polypeptide chain.
Detailed explanation-3: -Transcription is the process of making an RNA copy of a gene sequence. Translation is the process of translating the sequence of a messenger RNA molecule to a sequence of amino acids during protein synthesis.
Detailed explanation-4: -What is the corresponding tRNA anticodon? UCU. The codon CGA codes for the amino acid cysteine, so a tRNA with anticodon UCU will be carrying cysteine.