english: As you might know, proteins are large biological molecules that perform different functions within our body, like catalyzing metabolic reactions or responding to stimuli or replicating DNA, but before a protein is expressed or produced, relevant parts of its genetic code present in the DNA are copied into the messenger RNA, so this messenger RNA has instructions on how to build a specific protein, and potentially it can build hundreds of proteins, but the one that tells them when to build them and how many to build are microRNAs.
non_english: Kao što već možda znate, proteini su veliki biološki molekuli koji obavljaju različite funkcije unutar tela kao što je katalizacija  metaboličkih reakcija, reagovanje na nadražaje ili replikacija DNK, ali pre ekspresije i stvaranja proteina bitni delovi genetičkog koda koji su prisutni u DNK se kopiraju u transportnu RNK, kako bi transportna RNK imala instrukcije  za građenje odeđenog proteina i mogla da izgradi stotine proteina ali ona koja govori kad da ih grade i koliko je mikroRNK.