Posted by: Pdfprep Category: USMLE Tags: USMLE certification, USMLE exam questions, USMLE practice exam Post Date: January 11, 2021 Pdfprep2021-01-11T01:08:03+00:00 Which of the types of RNA is the smallest?A . mRNAB . tRNAC . rRNA View Answer Answer: B Author Pdfprep