MICROANATOMY

Detailed explanation-1: -Each nuclear pore is a large complex of proteins that allows small molecules and ions to freely pass, or diffuse, into or out of the nucleus. Nuclear pores also allow necessary proteins to enter the nucleus from the cytoplasm if the proteins have special sequences that indicate they belong in the nucleus.

Detailed explanation-2: -It controls the passage of substances to the inside or outside of the nucleus. It helps in the transport of proteins and RNA from the nucleus to the cytoplasm and also transport the carbohydrates, signaling molecules and lipids moving into the nucleus.

Detailed explanation-3: -The nuclear pores allow the entry and exit of select biomolecules. For instance, ribonucleoproteins leave the nucleus whereas certain proteins (e.g. DNA polymerases), carbohydrates, lipids, and signaling molecules enter the nucleus through the nuclear pores.