BIOL-UA 11 Study Guide - Midterm Guide: Nuclear Membrane, Endomembrane System, Cell Membrane
2 Nov 2015
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Eukaryotic cell organized into compartments b/c compartments are enclosed by membranes. Endomembrane system that allows cells to carry out reactions with different conditions. Nuclear envelope contiguous with er, which has small vesicles that can bud off er, most go to. Sorting of proteins put into vesicles specific for certain part of cell/organelle/membrane. Travels with different contents to different parts of the plasma membrane (peroxisomes, lysosomes, mitochondria) What controls shape of cell? cytoskeleton (actin hairs in green, cytoskeleton is half-circle outside in orange, nucleus is middle circle in blue) Cell motility/movement (not in plant cells b/c they don"t move) Cytoskeleton provides roads upon which motor proteins can move vesicles. Control direction of movement of proteins, rna"s and vesicles. Not tube, but solid filament (solid on inside) *-no known motor proteins that move on intermediate filaments. Actin contraction is one of main things involved in changing shape of cell to allow it to move.
