Here's a breakdown:

* DNA (Deoxyribonucleic acid): This is the blueprint of life. It contains the genetic instructions for building and maintaining an organism. DNA is responsible for:

* Storing genetic information: DNA acts like a library holding all the instructions needed to make an organism.

* Passing on genetic information: DNA is replicated and passed down from one generation to the next, ensuring the inheritance of traits.

* RNA (Ribonucleic acid): RNA plays a crucial role in the process of turning genetic information into proteins. It acts as a messenger between DNA and the ribosomes, where protein synthesis occurs. RNA is responsible for:

* Carrying genetic information: RNA acts as a copy of the DNA instructions.

* Translating genetic code: RNA helps convert the genetic code into proteins, which perform various functions in the body.

In short, nucleic acids are essential for life because they allow organisms to store, transmit, and express their genetic information, ultimately determining the characteristics and functions of an organism.