VTPP 423 Lecture 3: Cell Physiology
26 Jan 2019
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Document Summary
Homeostasis highlights: cells are highly organized, living building blocks of the body, three major parts of a cell, plasma membrane, nucleus, cytoplasm, consists of cytosol, organelles, and cytoskeleton. Icf encompasses all fluid inside the cell, including that within the cytosol, organelles and nucleus! "workbenches" where protein synthesis takes place: not all ribosomes in the cell are attached to the rough er. Not with any internal membranes: how secretory vesicles take up specific products in the golgi stacks for release into the ecf, newly finished proteins destined for secretion contain a sorting signal, unique sequence of amino acids. Inner membrane that forms a series of infoldings or shelves (cristae) that project into inner cavity filled with gel solution (matrix: cristae contain proteins, convert oxygen -> usable form, two membranes are separated by a narrow intermembrane space. Incoming trna binds: where trna carrying growing chain binds, empty trna binds before being released.
