NATS 1675 Lecture Notes - Lipid Bilayer, Nuclear Pore, Cell Membrane
1 Apr 2013
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Document Summary
Cell is stained with colour, otherwise there are no distinct features visible cells are translucent. The cytoplasm contains networks of membranes and many other organelles suspended in a clear liquid (cytosol) Organelle = tiny organ within a cell (an organ = a structure composed of several kinds of tissue capable of carrying out a particular function, a component of an organ system) Cells -> tissues -> organs -> organ systems -> multicellular organism: cells are the building blocks of all organs. Most organelles are bound by membrane, some do not have membrane non-membranous centrioles do not have a membrane. Animal kingdom, cells come in different sizes and shapes, each kind with a different function. Most cells in the human body range from 0. 5 40 micrometers(um) in diameter. Human egg referred to largest cell in human body 100 um. Nerve cell in human body can be as long as a meter but very thin in diameter.
