Biology Catalyst Wednesday, 3/19/14 - PowerPoint PPT Presentation

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Biology Catalyst Wednesday, 3/19/14

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  1. Biology Catalyst Wednesday, 3/19/14 • Visit the class website (http://aofscience.weebly.com) and answer the “CATALYST” question(s). Questions: • Why can you consider photosynthesis and cellular respiration as "opposite reactions"? Explain. • Where does the energy in an ATP molecule come from?

  2. P3 Biology Agenda 3/19/14 • Catalyst • Announcements • CONGRATULATIONS! This week is REDEMPTION WEEK!Out of the goodness of my heart, you will have this whole week and the weekend to make up any 3rd MP work you missed. (DUE March 25, 2014. If you can’t get this done, there is a strong possibility that there is no hope.) • Glycolysis Review • Cellular Respiration WebQuest • POSTER TIME!

  3. Biology GPoints P3: 53 (on time) P7: 47 (on time, focused) Your class can earn class points if: everyonein class: Comes to class quietly and on time Stays focused and on task during class Leaves classroom neat and organized Students are teaching other students Majority of class participates Follows all classroom expectations and procedures And more…

  4. P3 Objectives 3/19/14 We will be able to • Explainhow glucose is broken down in glycolysis. • Create a visual aid to help ourselves remember cellular respiration. 

  5. Exothermic vs. endothermic Reactions Exothermic Endothermic ABSORBS heat from the surroundings (feels cold) Breaking a chemical bond requires energy • RELEASES heat to the surroundings (feels hot) • Creating a chemical bond releases energy in the form of heat

  6. Enthalpy • Enthalpyis the amount of heat used or released in a system (chemical reaction) at constant pressure. • Symbolized by ΔH • Unit is the joule (J) • For exothermic reactions: ΔH is NEGATIVE • For endothermic reactions: ΔH Is POSITIVE

  7. CHEMICAL REACTION COORDINATE

  8. EXOTHERMIC vs ENDOTHERMIC REACTIOn

  9. GLYCOLYSIS Glycolysis (glyco = sugar; lysis = breaking) GOAL is to break down glucose into pyruvate molecules.

  10. During Classwork Time • Stay focused on the assignments you are given. • Keep the noise level down. • Stay in your seats. • Ask THREE before you ask ME. • You may put earphones on and listen to music quietly as you do your work. (Pick a playlist and stick with it!) • You must make progress at the end of the period. TASK: Cellular Respiration WebQuest POSTER!

  11. Glycolysis in detail* • http://www.accessexcellence.org/RC/VL/GG/ecb/ecb_images/Panel_13_01Glycolysis.pdf

  12. Glycolysis Summary • Breaks 1 glucose to 2 pyruvate molecules • Produces 4 ATPs and 2 NADH

  13. Cellular Respiration WebQuest • Go online to the class website http://aofscience.weebly.com • Go to Biology  Biology Assignments and Projects and click on the first link for the WebQuest Link.

  14. Pulse check Turn to a partner and discuss the following questions. Be ready to share out. • What is the goal of cellular respiration? Glycolysis? • How are eating and cellular respiration related?

  15. Cellular respiration POSTER TIME! • In your PLGs, create a poster with your assigned topic. • Everything must be drawn. Pictures CANNOT be printed out. • Everyone must be involved. (Researching, editing, coloring, gathering supplies, cutting, gluing, etc.) • Be sure to the images and writing can be seen from across the room! These may be helpful during quizzes…  • You will be graded on level of productivity, neatness, and scientific accuracy. • Before you start the poster, show me a rough draft on a regular sized paper.

  16. Poster Topics • ATP • Glycolysis • Pyruvate Oxidation • Fermentation • Krebs Cycle • Electron Transport Chain NOTE: In your posters, be sure to somehow emphasize the FINAL PRODUCTS of each process.

  17. Cellular Respiration Jeopardy • https://jeopardylabs.com/play/cellular-respiration-jeopardy34

  18. Objectives 3/11/14 We will be able to • Describe the basic structure of an atom. • Explain the difference between an ionic and covalent bond. • Explain the importance of chemical concepts in biology. 

  19. Digestive System

  20. Eukaryotic Cell

  21. Digestive System

  22. SMALL INTESTINE

  23. Glycolysis in detail* • http://www.accessexcellence.org/RC/VL/GG/ecb/ecb_images/Panel_13_01Glycolysis.pdf

  24. CELLULAR RESPIRATION SONG!!! • http://www.youtube.com/watch?v=FHWbjnzfi_U

  25. Atoms and Elements • Atoms are the basic unit of matter. • Nucleus: Contains protons and neutrons • Electrons: Move around the nucleus • An element is a substance that cannot be broken down into other substances.

  26. Check your partner’s understanding. Share out.

  27. Bonding • Atoms combine by bonding: • Covalent bonds: Electrons are shared. • Ionic bonds: Electrons are transferred. • Molecule: Two or more atoms joined by covalent bonds • Compound: Substance composed of atoms of two or more different elements

  28. COVALENT BONDING = Electrons are shared

  29. Ionic Bonding = Electrons are Transferred When atoms form ionic bonds, the positively charged atom is attracted to the negatively charged atom.

  30. Why care about atoms and molecules?

  31. MACROMOLECULES = ESSENTIAL FOR LIVING

  32. Carbohydrates • All have formula: CnH2nOn • Classified as • Monosaccharides (one) • Disaccharides (two) • Polysaccharids (many) • Function in humans: Energy storage Glucose (monosaccharide)

  33. LIPIDS

  34. Amino Acids Proteins are folded-up chains of amino acids. There are 20 commonly occurring amino acids.

  35. Protein structure