Answer: a) codon b) anticodon
Step-by-step explanation:
The process of protein formation in a cell is called Translation.
Translation process begin when tRNA enters ribosome. tRNA consist of three nucleotides called anticodon that matches with the codon present in the mRNA. Anticodon in tRNA binds with a specific codon present in mRNA and so results in the addition of amino acids to produce protein chain.
Hence, tRNA matches with the codon on the mRNA, it brings in the corresponsing anticodon to begin forming the protein.