Each time a new codon is exposed: 1  A matching tRNA binds to the codon. 2  The existing amino acid chain (polypeptide) is linked onto the amino acid of the tRNA via a chemical reaction. 3  The mRNA is shifted one codon over in the ribosome, exposing a new codon for reading.
Phrasal verbs are very common in spoken and written English so we need them to understand and speak natural English. If you're in a hurry to learn just a few verbs, take a look at our phrasal verb list. Many multi-word verbs have a single word alternative which is more common in formal or academic English.
Three-Word Phrasal Verbs (Transitive) With the following phrasal verbs, you will find three parts: My brother dropped out of school before he could graduate..