Final answer:
True, nuclear pores control the highly regulated passage of molecules like proteins and RNA into and out of the nucleus, maintaining cellular function.
Step-by-step explanation:
True, nuclear pores control the highly regulated passage of molecules into and out of the nucleus. The nucleus of a cell is surrounded by a double-membraned nuclear envelope, which contains numerous nuclear pores. These pores are protein complexes that act as gatekeepers, controlling the movement of ions, molecules such as proteins and RNA, and other solutes between the nucleoplasm and the cytoplasm. The nucleoplasm, which is a semi-solid fluid within the nucleus, contains essential components such as chromatin and the nucleolus. The nuclear pores are engineered to respond to specific signals that determine which molecules can enter or leave the nucleus. They regulate vital functions such as the synthesis of ribosomes in the nucleolus and the export of ribosomal subunits to the cytoplasm.