Why can transfer RNA be referred to as a “bridging” molecule?

a. It forms a chemical bridge between DNA and messenger RNA.

b. It creates the linkage between the base pairs of the double helix.

c. It links species through evolution.

d. It links ribosomes together.

e. It binds to both amino acids and messenger RNA.

Adv.

Answer:

It binds to both amino acids and messenger RNA: Transfer RNA has an anticodon, which specifically binds to the codon present in the mRNA molecule. This interaction will be based on the amino acid that is attached to the other end of the tRNA. Thus, the transfer RNA forms a chemical bridge between the amino acid and the messenger RNA. So, it is referred to as bridging molecule.

Hence, the correct option is (e) it binds to both amino acids and messenger RNA.

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