Dear Student,
tRNA is transfer RNA. It is RNA molecule responsible for the translation process in protein synthesis. In two dimensions tRNA has three loops one of which is the anti codon . Opposite to the anticodon is the amino acid attachment site. In three dimensions it is a L shaped structure bent in the middle.
Structure of tRNA
tRNA has an anticodon loop which has UAC that has bases complementary to the mRNA code and an amino acid acceptor end which has a role in initiation of translation and is coded by methionine or start codon AUG where it binds to the corresponding amino acid.
There are no tRNAs for stop codons.
Regards,