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Mrs. Carlene Tate

Mrs. Carlene Tate. Biology/Pre-AP D110 International Scholars Academy. 9-23-13 Monday- No school 9-24-13 Tuesday. Objectives Analyze the flow of matter and energy through trophic levels using various models, including food chains, food webs, and ecological pyramid.

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Mrs. Carlene Tate

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  1. Mrs. Carlene Tate Biology/Pre-AP D110 International Scholars Academy

  2. 9-23-13 Monday- No school9-24-13 Tuesday Objectives • Analyze the flow of matter and energy through trophic levels using various models, including food chains, food webs, and ecological pyramid. • Recognize that long term survival of species is dependent on changing resource bases that are limited. • Describe the flow of matter through the carbon and nitrogen cycles and explain the consequences of disrupting these cycles. • Describe how environmental change can impact ecosystem stability. Agenda: 1. Ecology PBL Presentation Day Due: Unit 3 ( Biochemistry) Vocabulary ( Turn in Presentation Grading Sheets and Presentation ) Homework: study biochemistry Vocabulary

  3. Wednesday 9-25-13 Objectives • Compare the structures and functions of different types of biomolecules, including carbohydrates, lipids, proteins, and nucleic acids. • Analyze and evaluate the evidence regarding formation of simple organic molecules and their organization into long  complex molecules having information such as DNA molecule for self replicating life. Agenda: 1. Explain Objective/Today’s Goal 2. Section 2-1 Notes ( chemistry of life) – 20R 3. Summary of Notes- Frayer Models – 21L Reminders: Study Vocabulary ( test tomorrow)…grades updated tonight……what will your parents think??? How do you feel??? WHAT WILL YOU CHANGE? Past Due Day 2: Limiting Factors Worksheet Past Due Day1: Vocabulary Journals due: Friday 9-27

  4. Elements and Atoms • Element – substance that can’t be broken down into simpler substances

  5. Represented by a 1 or 2 letter symbol • Ex: C-Carbon, O-Oxygen, H-Hydrogen, N-Nitrogen

  6. Atomic Number: the # assigned to an element on the periodic table. • The # is equal to the total # of p+ • Ex: Carbon is #6. C has 6 protons, 6 neutrons. Since e- = p+, it has 6 e-. • The number of neutrons is calculated by subtracting the atomic number from the atomic mass. • Electrons are equal to the atomic # ( unless there is a charge)

  7. Compounds & Bonding • Compound: substance that is composed of atoms of different elements chemically combined. • Ex: Water (H20)

  8. Covalent bond: force that holds two atoms together when sharing e- • Most compounds in organisms are covalent bonds H and Cl

  9. Ionic bond: attractive force between two ions of opposite charge • Ex: Sodium loses e-, becomes + ; chlorine gains that e-, becomes –

  10. Mixtures & Solutions • Mixture: combination of substances in which the substances retain their own properties • Ex: sand & sugar

  11. Solution: mixture in which one or more substances are distributed evenly in another substance

  12. Solute: dissolved substance • Solvent: substance the solute is dissolved in

  13. Ex: Kool-Aid • Kool-Aid and sugar are solute • Water is solvent

  14. Thursday 9-26-13 Objectives • Compare the structures and functions of different types of biomolecules, including carbohydrates, lipids, proteins, and nucleic acids. • Analyze and evaluate the evidence regarding formation of simple organic molecules and their organization into long  complex molecules having information such as DNA molecule for self replicating life. Agenda: 1. Vocabulary Quiz ( 15 min) 2. Section 2-1 ,2-2 Notes ( chemistry of life continued) – 21R 3. Summary of Notes- Frayer Models – 22L Past Due Day2: Vocabulary Journals due: Friday 9-27

  15. Isotopes: atoms of the same element that have different #s of neutrons

  16. Water • Polar molecule: molecule with an unequal distribution of charge • Each molecule has + and – ends Water has a pH of 7 and is considered the universal solvent.

  17. Cohesion vs. Adhesion Cohesion: Attraction of molecules of the same substance. Adhesion: Attraction of molecules of different substances.

  18. Acids & Bases • pH: measure of how acidic or basic a solution is • Use a scale from 0-14 • 0: extremely acidic • 7: neutral • 14: extremely basic

  19. Acid: any substance that forms hydrogen ions (H=) in water • pH < 7

  20. Base: any substance that forms hydroxide ions (OH-) in water • pH > 7

  21. Polymer: large molecule formed when many smaller molecules ( monomers) bond together • Usually long chains Monomer: a single unit molecule

  22. Dehydration Synthesis ( Condensation) Dehydration is the removal/taking out of water from a substance and synthesis is the process of adding/building up of basic units to make a molecule. Dehydration synthesis is the removal of water in order to build a bond/form a molecule

  23. Hydrolysis Hydrolysis is the addition of water in order to break down a molecule. So…dehydrates makes, and hydrolysis breaks

  24. Friday 9-27-13 Objectives • Compare the structures and functions of different types of biomolecules, including carbohydrates, lipids, proteins, and nucleic acids. . Agenda: 1. Bell Ringer 8 (22R) 2. Carbohydrates/Biomolecules Pre-Reading (23L) 3. Closure: Name the 4 macromolecules and identify the monomer of each one. ( say out loud as a class) There will be a lab on Monday. If you do NOT have a safety contract on file, you may NOT participate ( observe only) Journals: I will grade them in class on Monday during lab. Have them ready! Have a Great Weekend!

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