Bio Review for Exam on Chp1-6

Bio Review for Exam on Chp1-6 - Bio Review for Exam on...

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Bio Review for Exam on Chp1-6 1. 2 theories of where cells come from? a. cell theory: all things are made of cells (cells are building blocks of all organisms) b. evolution: come from pre-existing cells 2. Where do cells come from? experiment a. Spontaneous generation: pattern in natural world b. Pasteur: process for creating pattern 3. Scientific Method a. Question b. Hypothesis c. Prediction d. Experiment e. Results f. Conclusions new hypothesis and experiment CHP2 4. Element a. 92 naturally occurring elements b. simplest building blocks c. make molecules 5. Atom a. smallest component of element b. protons (+), neutrons (neutral), electrons (-) 6. Covalent bonds a. Sharing of electrons b. Fill valence shells to stabilize 7. non covalent bonds a. link molecules together b. weaker bonds c. hydrogen and ionic bonds 8. hydrogen bonds a. link molecules together 9. ionic bonds a. gain/loss of electrons b. create cation (+) and anions (-) (become ions) 10. ion a. atom/molecule that carries a charge 11. water a. 70% of cells weight b. best solvent c. d. H2O e. Determines structure of cells and components 12. cohesion
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a. binding btwn like molecules (stays together b/c of hydrogen bonds) 13. adhesion a. binding btwn unlike molecules b. interaction btwn liquid and solid surface 14. buffer a. minimizing change in pH b. neutralizes solution 15. Carbon a. 4 valence electrons b. chains can be very long (with H) c. diverse C-C arrangements (many combos) d. large energy of C-C e. includes P,O,N,S, 16. Chemical evolution a. Simple chemical compounds in atmosphere and ocean combine to make larger, more complex substances 17. Electronegativity
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Bio Review for Exam on Chp1-6 - Bio Review for Exam on...

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