Question

To avoid the inevitable collisions that would occur if two-way traffic through a single pore were allowed, nuclear pore complexes are specialized so that some mediate import while others mediate export. True or False?

Answer 1

The statement is false; nuclear pore complexes are capable of mediating both import and export through a single pore, and involve complex mechanisms for selective and regulated transport across the nuclear envelope.

Step-by-step explanation:

The statement that nuclear pore complexes are specialized such that some mediate import while others mediate export to avoid colloreisions is false. Nuclear pore complexes actually facilitate both import and export in a single pore. These complexes are sophisticated structures that control the passage of molecules into and out of the nucleus using active and passive transport mechanisms.

The nuclear envelope, which contains these nuclear pore complexes, is critical for transporting proteins and RNA molecules between the nucleoplasm and the cytoplasm. This process is highly regulated and involves ATP hydrolysis for the active transport of nuclear proteins into the nucleus. The nuclear pore complexes function as a selective gateway, utilizing various types of transport proteins, like channel proteins and carrier proteins, to facilitate the movement of specific molecules across the nuclear envelope.