BSC 160 1nd Edition Lecture 5 Outline of Last Lecture 1. Phylogeny2. Taxonomy3. Classifying prokaryotesOutline of Current Lecture 1. Prokaryotes2. Specific Names3. Types of molecular bondsCurrent LectureProkaryotes: Bacteria & Archaea- Archaea more closely related to Eucarya- Viruses are acellular. Not classified- Endosymbiosis Assigning specific names- Binomial (scientific) nomenclature- Gives each microbe 2 names:-Genus – Capitalized-species- lowercase- Both italicized or underlined- Inspiration for names is extremely varied, often imaginativeThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.Fundamental Concepts: Matter & Molecules- Matter- anything with mass, takes up space- Atom- makes up all matter- Non-modified atoms are electrically neutral - Atomic #=#of protons. *Protons define elements!- Ion- charged element- Cation- positively charged ion- Anion- negatively charged ion- Isotopes- changing neutrons. Many are unstable- Electron arrangement- Key to chemical behavior of atom lies number & arrangement of electrons in their orbitals. *Shape is everthing!- Octet rule- Outermost shell with electrons has to be full (have 8) to be stable.Except Hydrogen which has 2- Molecules- Group of atoms held by stable association (chemical bonds)Types of Bonds- Covalent bonds- Strongest. When electrons are sharedNonpolar- equal sharing of electronsPolar- unequal sharing of electrons (H2O)- Redox/Ionic bonds- When electrons are gained or
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