SCI 1101 Lecture Notes - Lecture 1: Chlorophyll, Heat Capacity, Cyanobacteria
Document Summary
Hydrogen bonds increase surface tension of a liquid: open system: exchange with surroundings, closed system: isolated from surroundings, no exchange. Discuss the importance of hydrogen bonding between water molecules. Water resists change in temperature because it has a high specific heat. It is called the solvent of life because it is necessary to sustain life. Maximum density of water is at 4o c because it is less dense as a solid than as a liquid. Ice floats, so organisms are able to live under the frozen water. Determines acidity or basic nature of a solution compared to pure water. The macromolecules are a subset of organic molecules (any carbon-containing liquid, solid, or gas) that are especially important for life. Lipids fats and waxes (energy storage), phospholipids (membrane components), and steroids (chemical messengers) Proteins structural support and movement, storage/transport molecules, hormones and enzymes. Nucleic acids sto(cid:396)e a(cid:374)d t(cid:396)a(cid:374)s(cid:373)it he(cid:396)edita(cid:396)y i(cid:374)fo(cid:396)(cid:373)atio(cid:374) (cid:448)ia se(cid:395)ue(cid:374)(cid:272)e of (cid:373)ole(cid:272)ules (cid:272)alled (cid:862)(cid:271)ases(cid:863)
