What are the functions of nucleic acids ? What are the structures of sugar molecules present in DNA and RNA.

Explanation

### Step-by-Step Solution

**Step 1: Understanding the Functions of Nucleic Acids**
Nucleic acids, which include DNA (Deoxyribonucleic Acid) and RNA (Ribonucleic Acid), have several essential functions in biological systems. The two primary functions are:

1. **Replication**: Nucleic acids are responsible for the replication of genetic material. This process allows cells to copy their DNA before cell division, ensuring that each new cell receives an identical set of genetic information.

2. **Protein Synthesis**: Nucleic acids play a crucial role in the synthesis of proteins. DNA contains the instructions for making proteins, and RNA acts as a messenger that carries these instructions from the DNA to the ribosomes, where proteins are assembled.
...