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translation in eukaryotic cell is associated with all the following organelles or locations except:
mitochondrial matrix
cytosol
nucleus
rough ER
answer says 'nucleus' because translation does not occur in the nucleus.
the chapter text after talking about signal peptides that can drag a ribosome to the rough ER: 'signal peptides may also be attached to polypeptides to target them to mitochondria, nucleus, or other organelles'
ok, so can a signal peptide actually
option1) cause ribosome movement to and translation at mitochondria and nucleus, or does that only happen for the rough ER, and
option2)there are other signal peptides that can direct completed proteins to other organelles once they're released into the cytosol?
and whichever is the answer, it seems like it would be true for nucleus AND mitomatrix, so i don't get how the distinction between the two comes up in this question...
either translation 'occurs at' both via signal peptides or it occurs at neither it would seem...
mitochondrial matrix
cytosol
nucleus
rough ER
answer says 'nucleus' because translation does not occur in the nucleus.
the chapter text after talking about signal peptides that can drag a ribosome to the rough ER: 'signal peptides may also be attached to polypeptides to target them to mitochondria, nucleus, or other organelles'
ok, so can a signal peptide actually
option1) cause ribosome movement to and translation at mitochondria and nucleus, or does that only happen for the rough ER, and
option2)there are other signal peptides that can direct completed proteins to other organelles once they're released into the cytosol?
and whichever is the answer, it seems like it would be true for nucleus AND mitomatrix, so i don't get how the distinction between the two comes up in this question...
either translation 'occurs at' both via signal peptides or it occurs at neither it would seem...