which of the following statements best describes the function of the nuclear pore complex found in eukaryotic cells?

The nuclear pore complex in eukaryotic cells selectively regulates the transport of molecules between the nucleus and the cytoplasm, acting as a gated channel across the nuclear envelope.

What the nuclear pore complex does

• It spans the double membrane of the nuclear envelope and forms aqueous channels connecting nucleus and cytoplasm.

• It allows free diffusion of small molecules but controls the passage of large proteins and RNA via receptor-mediated transport.

• It is essential for processes like mRNA export from the nucleus and import of regulatory proteins (such as transcription factors) into the nucleus.

So, in multiple-choice form, the best statement is the one that says the nuclear pore complex is a selective gateway that controls bidirectional transport of macromolecules between the nucleus and cytoplasm across the nuclear envelope.