7.4 Cell Structure 1: Nuclear Transport

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Last updated 2:57 AM on 8/30/26
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6 Terms

1
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nuclear envelope

separates the nucleus from the rest of the cell supported by an internal fibrous nuclear lamina and bounded by 2 membranes

2
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nuclear pore

  • extends through both the inner and outer nuclear membranes, connecting the inside of the nucleus w/ the cytosol

  • each consist of approximately 30 different protons


3
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ribosomal RNAs

bind to protons to form the large and small subunits of ribosomes

4
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messenger RNA (mRNA)

carry the info required to manufacture proteins

5
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typical cell

imports/exports over 500 molecules through each of 2000-5000 nuclear pores every second

6
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nuclear localization signal (NLS)

a short amino acid sequence that marks a protein for delivery to the nucleus