Which of the following statements about the nucleus of a cell is INCORRECT?
A) Proteins imported into the nucleus require a nuclear localisation signal that interacts with the DNA.
B) The nucleolus is a region in the nucleus where ribosomes are synthesised.
C) The nucleus contains DNA and is surrounded by the membrane envelope which is perforated by nuclear pores.
D) Nuclear pores regulate the passage of proteins and RNA in and out of the nucleus.
E) In the nucleus, long DNA molecules wind around clusters of histone proteins which allow the DNA to form chromosomes.

Question

Quizplus · Accepted Answer

Proteins imported into the nucleus do require a nuclear localization signal, but this signal interacts with nuclear import receptors, not directly with the DNA. The purpose of the signal is to facilitate the protein's entry into the nucleus through the nuclear pores, rather than interacting with DNA.

Which of the Following Statements About the Nucleus of a Cell