Question

Which of these is a tRNA? The figure shows a process of translation. Letters from A to D indicate definite structures. Letter A indicates a sequence which is the base of the translation. Letter B indicates units which transport all necessary amino acids. Letter C indicates a structure in which the translation happens. Letter D indicates the synthesized molecule. Letter E indicates units which are transported to the structure C and forms the sequence of the molecule. Which of these is a tRNA? The figure shows a process of translation. Letters from A to D indicate definite structures. Letter A indicates a sequence which is the base of the translation. Letter B indicates units which transport all necessary amino acids. Letter C indicates a structure in which the translation happens. Letter D indicates the synthesized molecule. Letter E indicates units which are transported to the structure C and forms the sequence of the molecule. A B C D E

Answer 1

In the context of translation, letter B represents transfer RNA (tRNA). tRNA is responsible for carrying amino acids to the ribosome, recognizing mRNA codons, and helping assemble the polypeptide chain in the correct sequence.

Step-by-step explanation:

In the process of translation, letter B represents the transfer RNA (tRNA) as it carries the necessary amino acids to the ribosome, which is structure C. The tRNA molecules have a very specific role in protein synthesis; they must recognize the codons on messenger RNA (mRNA) and match them with the correct amino acids. A tRNA molecule has two crucial components: one end with a binding site for its specific amino acid, and the other end with a sequence called the anticodon. This anticodon corresponds to the codon for that amino acid in mRNA, ensuring that amino acids are added to the growing polypeptide chain in the correct order.

Answer 2

Letter A indicates a sequence which is the base of the translation. This is mRNA which contains the instructions for building a protin in a form of three nucleotides – codons.

Letter B indicates units which transport all necessary amino acids. This is tRNA which “reads” the codons of a mRNA by binding its anticodons to mRNA’s codons (base pairing).

Letter C indicates a structure in which the translation happens. This is a ribosome a protein-and-RNA structure which consist of small and large subunits.

Letter D indicates the synthesized molecule. This is a protein or more precisely polypeptide chain that will become protein after folding.

Letter E indicates units which are transported to the structure C and forms the sequence of the molecule. This is amino acid, basic unit for building a protein specified by the codon on mRNA.