Answer:
[tex]\boxed {\tt Nucleic \ Acids}[/tex]
Explanation:
Nucleic acids are the monomers of genetic material, such as DNA and RNA. These structures are found in the nucleus and ribosomes because DNA is stored in the nucleus, RNA is made in the nucleus, and RNA is used to make proteins in the ribosome.
Cholesterol, proteins, galactose, and phospholipids are all cell membrane components. Nucleic acids are not. We know they are in the nucleus and ribosomes. Therefore, the correct answer is nucleic acids.
