[Campbell Biology P.151] Which of the following statements most accurately describes the euk... | Practice Question

Which of the following statements most accurately describes the eukaryotic nucleus and its associated structures as presented in the text?

  • A: The nucleus primarily functions in protein synthesis, with ribosomes located within its interior.
  • B: The nuclear envelope is a single membrane perforated by pores about 20-40 nm in diameter.
  • C: The nuclear lamina is a netlike array of protein filaments that mechanically supports the nuclear envelope.
  • D: Genes are exclusively found within the nucleus of eukaryotic cells.

Explanation

The text states that the nuclear lamina is a netlike array of protein filaments that maintains the shape of the nucleus by mechanically supporting the nuclear envelope. The nucleus houses most of the cell's DNA, but protein synthesis primarily occurs in the cytoplasm. The nuclear envelope is a double membrane with pores about 100 nm in diameter. Some genes are indeed located outside the nucleus in mitochondria and chloroplasts.