The proteins associated with nucleic acids are

Options

A. histones
B. albumins
C. globulins
D. scleroproteins

Answer

### Step-by-Step Solution:

1. **Understanding Nucleic Acids**:
- Nucleic acids refer to DNA and RNA, which are essential biomolecules that store and transmit genetic information.

2. **Identifying Proteins Associated with Nucleic Acids**:
- The primary proteins associated with nucleic acids, particularly DNA, are known as histone proteins.

3. **Role of Histone Proteins**:
- Histone proteins are basic in nature, which helps neutralize the acidic properties of DNA due to its phosphate backbone. This neutralization is crucial for the stability of the DNA structure.

4. **Composition of Histone Proteins**:
- Histones are rich in the amino acids lysine and arginine, which contribute to their positive charge and ability to bind to the negatively charged DNA.

5. **Function of Histones in Eukaryotic Cells**:
- In eukaryotic cells, histones act as spools around which DNA coils, facilitating the compact structure of the nucleic material. This coiling is essential for DNA packaging within the nucleus.

6. **Types of Histone Proteins**:
- There are five major classes of histone proteins: H1, H2A, H2B, H3, and H4.
- H2A, H2B, H3, and H4 are known as core histones, while H1 (and H5) are classified as linker histones.

7. **Other Proteins**:
- Other types of proteins such as albumins, globulins, and scleroproteins are not associated with nucleic acids. Instead, globulins are primarily found in the blood, while scleroproteins serve structural roles in various tissues.

### Summary:
The proteins associated with nucleic acids, particularly DNA, are primarily histone proteins, which play a crucial role in DNA packaging and stabilization.

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