BIOMOLECULES AND ENZYMES

BIOLOGY

STRUCTURE OF PROTEINS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
tRNA has a sequence of three nitrogen bases attached called ____
A
Codons
B
Base pairs
C
Anticodons
D
Genes
Explanation: 

Detailed explanation-1: -As per the codons on mRNA, tRNA provides the amino acids to the ribosome (site of protein synthesis). The nucleotides of tRNA are complimentary to the three nitrogenous bases of the codon on the mRNA, hence they are called anticodons.

Detailed explanation-2: -Roughly in the middle of the tRNA molecule is a sequence of three bases called the anticodon. These three bases are hydrogen bonded to a complementary sequence in an RNA molecule-called messenger RNA, mRNA-during protein synthesis.

Detailed explanation-3: -The anticodon sequence is complementary to the mRNA, using base pairs in the anti-parallel direction. tRNA is read 3’-to-5’, so the sequence would be 3’-UUG-5’. Keep in mind that adenine binds to uracil in RNA.

Detailed explanation-4: -An anticodon is a unit of three nucleotides corresponding to the three bases of an mRNA codon. Each tRNA has a distinct anticodon triplet sequence that can form 3 complementary base pairs to one or more codons for an amino acid.

Detailed explanation-5: -Each tRNA contains a set of three nucleotides called an anticodon. The anticodon of a given tRNA can bind to one or a few specific mRNA codons. The tRNA molecule also carries an amino acid: specifically, the one encoded by the codons that the tRNA binds.

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