A)Nuclear transport receptors would be unable to bind cargo.
B)Nuclear transport receptors would be unable to enter the nucleus.
C)Nuclear transport receptors would be unable to release their cargo in the nucleus.
D)Nuclear transport receptors would interact irreversibly with the nuclear pore fibrils.

A)added to proteins through post-translational modification.
B)added to a protein by a protein translocator.
C)encoded in the amino acid sequence and sufficient for targeting a protein to its correct destination.
D)always removed once a protein is at the correct destination.

A)The ER is the major site for new membrane synthesis in the cell.
B)Proteins to be delivered to the ER lumen are synthesized on the smooth ER.
C)Steroid hormones are synthesized on the smooth ER.
D)The ER membrane is contiguous with the outer nuclear membrane.