NEET BIOLOGY

GENETICS AND EVOLUTION

MOLECULAR BASIS OF INHERITANCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The amino acid attaches to the tRNA at its
A
5’-end
B
3’-end
C
anticodon site
D
DHUloop.
Explanation: 

Detailed explanation-1: -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.

Detailed explanation-2: -Amino acids are attached to the tRNA 3’-end as a prerequisite for entering the ribosome for protein synthesis.

Detailed explanation-3: -At one end, the tRNA has an anticodon of 3’-UAC-5’, and it binds to a codon in an mRNA that has a sequence of 5’-AUG-3’ through complementary base pairing. The other end of the tRNA carries the amino acid methionine (Met), which is the the amino acid specified by the mRNA codon AUG.

Detailed explanation-4: -A codon is the triplet of a set of bases (or nucleotides) in DNA that codes for an amino acid. The triple base complement for a codon is called an anticodon; By convention, triplets in mRNA are called codons, and triplets in tRNA are called anticodons. These codons are translated into protein sequences.

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