Final answer:
RNA is the nucleic acid manufactured in the nucleus and enters the cytoplasm via the nuclear pores to help assemble proteins.
Step-by-step explanation:
RNA is the nucleic acid manufactured in the nucleus and enters the cytoplasm via the nuclear pores. DNA is found in chromosomes within the nucleus, while proteins are made at ribosomes in the cytoplasm. To bridge this gap, RNA carries the genetic information from DNA in the nucleus to the ribosomes in the cytoplasm, where it helps assemble proteins.