PET-3322 Lecture Notes - Lecture 2: Atp Hydrolysis, Nucleoplasm, Cellular Respiration
10 Oct 2017
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Cell theory: cell the structural and functional unit of life, how many different types of human cells are there, 200, the types differ in subcellular, shape, and size. Generalized cell: human cells have three basic parts, plasma membrane, cytoplasm, nucleus, plasma membrane flexible outer boundary, cytoplasm intracellular fluid containing organelles, nucleus dna containing control center. Plasma membrane: acts as a barrier and separates the intracellular fluid from the extracellular fluid, also known as the cell membrane . Membrane lipids: phosphate heads: polar and hydrophilic, hydrophilic water loving, fatty acid tails nonpolar and hydrophobic, hydrophobic water hating. Membrane proteins: there are two types, integral proteins, firmly inserted into membrane, most are transmembrane proteins, function as transport proteins, enzymes or receptors, peripheral proteins, loosely attached to integral proteins. Include filaments on intracellular surface used for plasma membrane support. Membrane proteins perform many tasks: go through figure 3. 4c in textbook. Glycocalyx: consists of sugars (carbohydrates) sticking out of cell surface.
