Answer :
Nuclear proteins are synthesized by ribosomes that are free in the cytoplasm, known as free ribosomes. These ribosomes are not bound to any membrane-bound organelles like the rough endoplasmic reticulum (RER) or the Golgi apparatus.
When a cell needs to produce nuclear proteins, the genetic information stored in the DNA in the nucleus is transcribed into mRNA. This mRNA then exits the nucleus through nuclear pores and reaches the free ribosomes in the cytoplasm where protein synthesis occurs.
Therefore, the correct answer to the question is:
- Free ribosomes
When a cell needs to produce nuclear proteins, the genetic information stored in the DNA in the nucleus is transcribed into mRNA. This mRNA then exits the nucleus through nuclear pores and reaches the free ribosomes in the cytoplasm where protein synthesis occurs.
Therefore, the correct answer to the question is:
- Free ribosomes