[BIOS 1030] - Midterm Exam Guide - Ultimate 12 pages long Study Guide!
5 Oct 2016
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Biology notes 8/24/16: different molecular structure than nonliving things, require energy and raw materials, composed of cells, maintain homeostasis, respond to their external environment, grow and reproduce, populations are capable of evolving. All living things are composed of cells: prokaryotic vs eukaryotic. Protista: unicellular and simple multicellular, eukaryotic (protozoa, algae, slime molds) Levels of biological organization: atom and molecule, cell, tissue, organ, organ system, community, ecosystem, biosphere. Steps in the scientific method: observe and generalize, formulate a hypothesis, make a testable prediction, experiment or observe, modify hypothesis as necessary and repeat. Hypothesis based on careful observation and generalization provides explanation for biological phenomenon. All matter consists of elements made of atoms. Atomic mass: (roughly) equal to protons + neutrons. Oxygen: 8 protons, 8 neutrons, 8 electrons, in 2 shells. Ex: hydrogen molecule- h2, oxygen molecule- o2, water- h20 (polar) Weak attraction between oppositely charged regions of polar molecules. Contain polar covalent bonds in which there are unequal sharing of electrons.
