Biology 2581B Study Guide - Quiz Guide: Nuclear Pore, Nuclear Membrane, Endoplasmic Reticulum

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This is where the nucleus completely breaks down while the cell divides and reassembles afterwards. In contrast, simpler organisms never entirely break down the nucleus. The nucleus was the first organelle to be discovered and was discovered by leeuwenhoek. Its role is to organize, protect and regulate the genome. Chromosomes occupy specific territories in the nucleus and the structure itself provides protection. This is important because it allows for splicing which. A process discovered by richard roberts that enables more complex organisms to form. The nucleus is made up of a nuclear envelope, nuclear pores, chromatin, nucleolus, nucleoplasm and nuclear lamina. The nuclear envelope is the double membrane surrounding the nucleus that encloses a flattened sac shape called the perinuclear space. Despite the inner and outer membranes joining, they are two distinct domains due to each having a specific combination of proteins.