BIOL107 Lecture Notes - Lecture 11: Chromatid, Metaphase, Chromosome

• School: University of Alberta
• Department: Biology (Biological Sciences)
• Course: BIOL107
• Professor: Torah Kachur

Document Summary

Biol 107 - lecture 11 - eukaryotic cells. Subset of organelles that are interconnected via vesicles. Vesicles are membrane-bound compartments that contain cargo. Membrane (thin dark purple line just within the outer nuclear membrane in diagram) Outer nuclear membrane (outer layer of the nucleus in the diagram) Is continuous with the endoplasmic reticulum (blue portion of diagram) Many nuclear pore complexes (red dots on diagram) Allow substances non-selectively in and out of the nucleus. Is the site of ribosomal subunit assembly. Each half of ribosome enters nucleus via nuclear pores. Goes to nucleolus where rrnas get complexed with the. Nuclear lamina (black and white portion in the diagram) protein portion of the ribosome. Structure/shell that maintains the shape of the nucleus in order to protect dna. Composed of an intermediate filament called laminin. Sits on the inner surface of the nuclear envelope. There are 2 meters of dna per eukaryotic (human) cell and over 600 billion cells per human.