NEET BIOLOGY

Detailed explanation-1: -Tiny pores in the nuclear envelope, called nuclear pores, then selectively permit certain macromolecules to enter and leave the nucleus-including the RNA molecules that carry information from a cellular DNA to protein manufacturing centers in the cytoplasm.

Detailed explanation-2: -Nuclear pores, small channels that span the nuclear envelope, let substances enter and exit the nucleus. Each pore is lined by a set of proteins, called the nuclear pore complex, that control what molecules can go in or out.

Detailed explanation-3: -Nuclear Membrane An array of small holes or pores in the nuclear membrane permits the selective passage of certain materials, such as nucleic acids and proteins, between the nucleus and cytoplasm.

Detailed explanation-4: -Nuclear pore complexes allow the transport of molecules across the nuclear envelope. This transport includes RNA and ribosomal proteins moving from nucleus to the cytoplasm and proteins (such as DNA polymerase and lamins), carbohydrates, signaling molecules and lipids moving into the nucleus.

Detailed explanation-5: -The nuclear pores are circular openings in the nuclear envelope, each plugged by a complex of proteins known as the nuclear pore complex, providing controlled passage between the nucleus and the cytoplasm.