AMME1362 Lecture Notes - Lecture 2: Endoplasmic Reticulum, Germ Cell, Lipid Bilayer
17 Oct 2018
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10-100 micrometer diameter: no cell wall(animsla), simple cell. Double stranded dna helix wrapped around histones(nucleosome), existing as chromatins (before cell division), or during cell divion exists as chromosomes. Germ vs somatic cells: cells can be classified as either germ cells/sex cells or somatic cells. Germ cells are reproductive cells, including the female oocyte (cell that develops into an egg) and a male sperm: somatic cells are all body cells except germ cells. Network of protein fibers consisting of microtubules(formed by tubulins), microfilaments(formed by actins) and intermediate filaments. Partially permeable membrane composed of a phospholipid bilayer arranged back-to- back enclosing cytoplasm of cells, Minute hairlike extensions on the surface of almost all mammalian cells (singular/multicellular). Hollow cylinders of proteolytic enzymes with regulatory proteins at their ends. Rna +proteins; fixed ribosomes bound to rough endoplasmic reticulum, free ribosomes scattered in cytoplasm. Strength, support, movement of cellular structures + materials.
