BIOL 200 Lecture Notes - Lecture 6: Autoradiograph, Mitochondrion, Organelle
Document Summary
Mitosis splitting (multiple, chromosomes x-shape, compact, getting reading to split) iclicker q: a. Heterochromatin more compact, darker, denser (little transcriptional activity) Euchromatin less compact, lighter, less dense (transcriptionally active & maybe replication) ***outer membrane of nuclear membrane is continuous with rer (closer to nucleus). Lumen in er similar to intermembrane space of nucleus. You treat cell with strong anionic detergent. Nuclear lamina fibrous layer just beneath the inner surface of nuclear envelope. Structural properties similar to cytoplasmic intermediate filaments (keratin fibers) Made of proteins called lamina, which associate with each other to form the filament. Anchors interphase chromatin (specific regions of the interphase chromosomes are attached to the nuclear lamins) Helps cell go to next stage (lamin proteins phosphorylated) Chromatin interacting with nuclear lamina: false. Not the site for protein synthesis. (protein synthesis -> cytosol. Mitochondria, chloroplast can have protein synthesis inside them: true. Intense activity. rdna regions that code for ribosomal rna.
