INTRODUCTION TO MOLECULAR BIOLOGY DNA, RNA, Proteins, Genetics, and Cell Function Reading Comprehension Passages. What makes life possible at the tiniest scale? Introduction to Molecular Biology guides students through the molecular machinery of living organisms, DNA, RNA, and proteins, revealing how they interact to build, repair, and sustain life. From genetic coding and replication to breakthroughs in biotechnology and medicine, this unit brings molecular biology to life through discovery a