Protein transport into the nucleus occurs . selective transport through individual subsets of nuclear pore complexes that are specific for individual classes of proteins. b. selective transport through the nuclear pores. c. diffusion through the nuclear envelope membranes. d. passive diffusion through the nuclear pores.

B. selective transport through the nuclear pores

Explanation:

The import of the nuclear protein is the selective process, with the short stretch of the amino acids interacts with the protein located in the core, on the nuclear envelope, and with the nuclear pore complex. The proteins are then translocated in through the pore and on to the nucleus in that manner that is requiring the ATP.

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