Question

The given figure is representing a step occurs during translation. Identify the labels (i), (ii) and (iii) and choose the correct option.
[0.7 mark]

• A.

  (i)	(ii)	(iii)
  Anticodon loop	Amino acid	3′ end of mRNA

• B.

  (i)	(ii)	(iii)
  Amino acid	Anticodon loop	5′ end of mRNA

• C.

  (i)	(ii)	(iii)
  5′ end of tRNA	Ribosomal binding loop	3′ end of mRNA

• D.

  (i)	(ii)	(iii)
  Nucleic acid	Codon loop	5′ end of mRNA

Answer 1

The correct option is B

(i)	(ii)	(iii)
Amino acid	Anticodon loop	5′ end of mRNA

The given figure shows the structure of tRNA:
(i) In tRNA, its 3′ end has unpaired-CCA sequence. Amino acid gets attached at this only.
(ii)The second loop in tRNA that is complementary to the codon on mRNA is called anticodon loop.
(iii) Label (iii) represents the 5′ end of mRNA. mRNA carries the codes for the amino acid.