What does molecular biology explain?

Molecular biology focuses on the fundamental processes of life by examining biological activity at a molecular level, particularly through the interactions between various cellular systems and the molecules that compose them, such as DNA, RNA, and proteins. This branch of biology seeks to elucidate how these chemical substances participate in biological processes, including replication, transcription, translation, and cellular signaling.

The emphasis on chemical substances and their interactions allows for a detailed understanding of how life functions in terms of molecular mechanisms, thereby providing insight into broader biological phenomena. This approach is vital for areas such as genetics, biochemistry, and cell biology, where these molecular interactions are foundational to the overall functioning of living organisms.