The watery environment in which DNA and ribosomes float depends on the cell type:

• In eukaryotic cells , DNA is contained within the nucleus, a membrane-bound organelle filled with a watery fluid called the nucleoplasm or nuclear sap, where the DNA and nucleolus reside. Ribosomes, however, float freely in the cytoplasm , the gel-like, water-based substance outside the nucleus that contains organelles and cellular machinery

• In prokaryotic cells , which lack a nucleus, both DNA and ribosomes float freely within the cytoplasm , the aqueous environment inside the cell bounded by the plasma membrane

In summary, the watery environment is:

• Nucleoplasm inside the nucleus for DNA in eukaryotes.
• Cytoplasm for ribosomes and for DNA in prokaryotes.

The cytoplasm is a semi-solid, water-rich substance (~70-80% water) containing proteins, ions, and other molecules essential for cellular processes

. The nucleoplasm is a similar watery fluid inside the nucleus, providing a medium for DNA and nuclear components. Thus, DNA and ribosomes float in aqueous environments called nucleoplasm (DNA in eukaryotes) and cytoplasm (ribosomes and prokaryotic DNA)