Indicate at which step of the replication-transcription-translati on process each type of rna first plays a role.

during which step of the replication-transcription-translati on process does each type of rna first play a role?

replication?
translation?
transcription/ rna processing?

The correct answer will be option- Translation.

Explanation:

There are main three types of RNA (mRNA, rRNA and tRNA) which are involved in the process of protein synthesis.  

During replication, none of the RNA is involved as DNA replication is associated with the formation of DNA from pre-existing DNA.

During transcription, Information coded on the DNA gets transcript into a molecule called mRNA which further acts as the coding molecule.

During Translation, the encoded mRNA gets translated into protein which requires all the three types of the RNA as mRNA acts as a messenger molecule, the site of translation takes place into ribosome which consists of rRNA and the tRNA which brings the specific amino acid.

Thus, translation is the correct answer.

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.