Question

Ribosome units are synthesised in a eukaryotic cell inside

• A. Nucleus
• B. Nucleolus
• C. Nuclear pore complex
• D. Cytoplasm

Answer 1

The correct option is B Nucleolus

• Ribosomes are known as protein factories because they are the main site of protein synthesis.
• They are composed of ribonucleic acids and proteins.
• The eukaryotic ribosomes are the 80S type (with 60S- large subunit and 40S- small subunit.
  
• In a eukaryotic cell, ribosome synthesis takes place both in the cytoplasm of the cell as well as in the nucleolus present within the cell nucleus.
  
• The genes that codes for ribosomal proteins are transcribed in the cytoplasm and are then transported to the nucleolus,
  
• In the nucleolus, the transcription and processing of rRNA take place and it also helps in assembling the ribosome.
• So, the correct answer is 'Nucleolus'.