Here are the answers to your blanks:
- The RNA that has an amino acid attached to it, and that binds to the codon on the mRNA, is called a tRNA (transfer RNA).
- Termination of translation happens when the ribosome hits a stop codon on the mRNA.
- Initiation of translation always happens at the start codon of the mRNA.
- Amino acids are attached to tRNA by enzymes called aminoacyl-tRNA synthetases.
- The process, performed by the ribosome, of reading mRNA and synthesizing a protein is called translation.