"Introduction to Molecular Biology Simplified" provides a fundamental introduction to molecular biology and is specifically designed for beginners. The book is divided into four chapters that present the essential concepts of molecular biology in an understandable way. It starts with an explanation of chromosomes as units of living cells, which consist of DNA molecules and various proteins. It then covers nucleic acids, including RNA and its types, DNA replication, the genetic code, and gene expression in eukaryotic and prokaryotic cells. The book also highlights the role of extrachromosomal DNA. It is aimed at students of biology or medicine and anyone who wishes to gain a basic understanding of molecular biology.