Where are the ribosomes assembled inside the nucleus?

• A. Chromatin
• B. Nuclear envelope
• C. Nuclear pore
• D. Nucleolus

Answer: (D)

Verified step by step guidance

1. Understand the function of ribosomes: Ribosomes are the cellular structures responsible for protein synthesis. They are composed of ribosomal RNA (rRNA) and proteins.
2. Identify the location of ribosome assembly: Ribosomes are assembled in a specific region within the nucleus known as the nucleolus.
3. Learn about the nucleolus: The nucleolus is a dense, spherical structure found within the nucleus. It is not surrounded by a membrane and is the site where rRNA is synthesized and combined with proteins to form ribosomal subunits.
4. Differentiate between the nucleolus and other nuclear components: The chromatin is the material that makes up chromosomes, consisting of DNA and proteins. The nuclear envelope is the double membrane that surrounds the nucleus, and nuclear pores are channels that allow the transport of molecules across the nuclear envelope.
5. Conclude that the nucleolus is the correct answer: Given the function and location of ribosome assembly, the nucleolus is the correct answer to the question of where ribosomes are assembled inside the nucleus.