5 Questions
What triggers the contraction of a muscle cell when a nerve impulse stimulates it?
Calcium ions rushing back across the ER membrane
Which structure regulates the entry and exit of most proteins and RNAs in a cell?
Pore complex
What maintains the shape of the nucleus by mechanically supporting the nuclear envelope?
Nuclear lamina
Where is ribosomal RNA assembled with protein to form ribosomal subunits?
Nucleolus
What separates the internal compartment of the endoplasmic reticulum from the cytosol?
Cisternal space
Explore the key concepts related to the nucleus as the command center of eukaryotic cells and its role in gene storage. Learn about the structure of the nucleus and its variations in different organisms like Paramecium and Entamoeba coli cyst.
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