BIOS 213 Lecture Notes - Lecture 2: Digestion, Biological Membrane, Fluid Mosaic Model
Document Summary
Water can dissolve molecules containing ionic bonds & can solubilize other polar or hydrophilic molecules (like will dissolve like: hydrophobic: non-polar, water fearing tails , lipids, hydrophilic: polar, water loving heads . Reacts to the h+ concentration of a solution, acidic vs. alkaline: ph=0 ( most acidic) ph=7 (neutral) ph=14 (basic) H+ are very reactive, alters molecular structures by infertility with bonds between atoms and molecules. Only free h+ contributes to h+ concentrations thus ph. Set point/normal blood ph 7. 35-7. 45 maintained through the use of buffers, hco3- ions are the main physiological buffer for acids: acidosis vs alkalosis: acidosis is much more common. Polymers of nucleotides: ribose sugar (rna), nitrogenous base, & phosphate, dna, genetic information, atp: adenosine triphosphate, energy source used by all cells. Simple carbohydrates are monosaccharides such as fructose of glucose or disaccharides such as sucrose (table sugar) They are an important source of energy and are important structurally, forming components of other molecules and cell membranes.
