Nowadays I am working on RC. I came across a few RCs on DNA, RNA, mRNA, tRNA, Amino Acid, Nucleic acid, Protein synthesis etc. I am from Engineering background, and left biology after 10th standard, so all these terminology were very confusing for me. The RCs were complete bouncer for me. But ,looks like, GMAT loves these topics. Hence, I decided to acquaint myself with these jargons. Did some googling and here are some good materials:
Introduction to these topics in very elementary terms:
https://www.chem4kids.com/files/bio_intro.html
Amazing videos on protein synthesis:
https://in.youtube.com/watch?v=D3fOXt4MrOM&NR=1
https://in.youtube.com/watch?v=983lhh20r ... re=related
https://in.youtube.com/watch?v=NJxobgkPE ... re=related
These are fascinating...