Mader/Biology, 10/e – Chapter Outlines

The nucleolus is a dark region of chromatin inside the nucleus; it is the site where ribosomal RNA (rRNA) joins with proteins to form ribosomes. The nucleus is separated from the cytoplasm by the nuclear envelope, which contains nuclear pores to permit passage of substances (e.g., ribosomal subunits, messenger RNA, proteins, etc.) in and out of ... ................
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