BIOL 1201 : Test 1 Notes
Document Summary
Science- the use of evidence to construct testable explanations and predictions of natural phenomena, as well as the knowledge generated through this process. Our typical experience: body temperature- 37 degrees celsius. Ionic interactions (transfer of e-, so opposite charges attract: bonds act differently in biological molecules due to water. Below a certain temperature molecular aggregates become larger. Embryo crystal seeds the solution when a critical radius is reached ice forms spontaneously. Pure water ( in the absence of heterogeneous nucleators, water can be supercooled to -40 c) Ice nucleators: proteins, polysaccharides, prevent super-cooled and rapid freezing (ice formation, cause freezing at a higher temp, **moodle image-** cousin it plant lobelia telekii, found in mountainous regions of. Hydrophilic substances interact (dissolve in) with water molecules. Nucleic acids: nitrogenous heterocyclic bases (ring structure with nitrogen, pentose sugar (carbohydrate, phosphoric acid, examples, coenzymes (nad, nadp, fad, genetic material (dna, rna, atp (adenosine triphosphate) Different types of r groups (polar, nonpolar, charged +/-)
