BIOL 102 Lecture Notes - Lecture 8: Lamin, Nuclear Membrane, Secretion
29 Aug 2016
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Describe the structure and organization of the cell nucleus: nuclear envelope: inner/outer membrane, nuclear lamin proteins: regulates dna replication, cell division, chromatin: only in eukaryotes, has histones. Internal nuclear matrix: diffuse molecules in matrix: nuclear pore complex: transports molecules across, cytosol: (cytoplasm = cytosol + organells) Distinguish between rough er and smooth er: Holds onto ribosomes that are producing proteins which will be. Does not have any ribosomes so appears to be smooth. Detoxification, metabolism of certain compounts and synthesis of lipids. Identify the location of the cytosol in a eukaryotic cell: Describe the three types of protein filaments that make up the cytoskeleton: actin filaments (also called microfilaments) Form a bond just beneath the plasma membrane that provides mechanical strength to the cell. Links transmembrane proteins (e. g. cell surface receptors) to cytoplasmic receptors. Pinches dividing animal cells apart during cytokinesis. Generate locomotions in cells such as white blood cells and the amoeba.
