Read the following statements regarding the nucleolus: (A) It is a membrane-bound structure. (B) It is a site for active ribosomal RNA synthesis. (C) Its content is continuous with the rest of the nucleoplasm. (D) It is smaller in cells actively engaged in protein synthesis. How many of the above statements are correct?

Step-by-step solution

Statements (B) and (C) are correct. The nucleolus is a site for active ribosomal RNA (rRNA) synthesis, and its content is continuous with the rest of the nucleoplasm because it is not a membrane-bound structure. Statement (A) is incorrect because the nucleolus lacks a membrane. Statement (D) is incorrect because cells actively engaged in protein synthesis possess larger and more numerous nucleoli, not smaller ones. Therefore, exactly two statements are correct. Answer: Two