No all rock dont have to go through a complete life cycle......i mean some could it but it dont have to be in any exact order ..... so your answer would be false
They are used for them to adapt to the environment
Answer:
DNA → mRNA → tRNA → Protein
DNA → mRNA → tRNA → Protein
Explanation:
This is because during protein synthesis, DNA is use to make RNA in the process called transcription. The DNA double strand is unwind by an enzyme called RNA polymerase to produce mRNA in the nucleus. The trans is produced in the nucleolus by RNA polymerase 1 and the site then binds aminoacyl tRNAs which is assembled in the RIBOSOMES. The tRNA are then translated into protein.