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Biology 12-14-15 Learning objective:
1st entry task for Chapter 8 – Photosynthesis Learning objective: How plants and other organisms capture energy from the sun Entry task: copy the chapter 8 map
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Today’s plan Get results from chapter 7 test
GO OVER Photosynthesis pogil Notes for chapter7
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Energy from Sunlight Chapter 7
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The Carbon Cycle
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The chemical equation for photosynthesis summarizes several reaction steps
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Human CO2 emissions natural-emissions.htm Photosynthesis Overview hotosynth/ A different kind of fuel s.diffuel/
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Hydrothermal Vents – Life without light
National geographic Life in other planets/moons nasa/2001/ast13apr_1/ a/vents_seeps/ David Attenborough
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Anatomy of a Chloroplast
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The two main stages of photosynthesis are: the light reactions, which occur in the thylakoids, and the Calvin cycle (light independent reactions), which occurs in the stroma
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Absorbed light A substance’s color is due to chemical compounds called pigments Most plants do not absorb green color, they reflect it
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Different forms of electromagnetic energy have different wavelengths
Different forms of electromagnetic energy have different wavelengths. Shorter wavelengths have more energy than longer wavelengths
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Types of pigments in plants
Chlorophyll a: Absorbs mainly blue-violet and red light and reflects mainly green light Chlorophyll b: Absorbs mainly blue and orange light and reflects yellow-green Carotenoids: Absorb mainly blue-green light and reflect yellow-orange.
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Harvesting Light Energy - Photosystems
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Photosystem model Chlorophyll 1 Chlorophyll 2
Chlorophyll 3 (Reaction-center Chlorophyll) Primary Electron Acceptor Water Molecule Light source
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The light energy boosts the electrons up to their excited states
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The Calvin Cycle
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By converting light energy to chemical energy, photosynthesis is the first step in the flow of energy through an ecosystem.
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Photosynthesis Table Stages Location INPUT OUTPUT Light Reactions
Calvin Cycle
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Photosynthesis Table CO2 Stages Location INPUT OUTPUT Light Reactions
THYLACOIDS LIGTH H2O ATP NADPH O2 Calvin Cycle STROMA CO2 SUGAR NADP+ ADP + P
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Compare contrast
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Biology 12-15-15 Learning objective: How we get the energy we need
2nd entry task for Chapter 8&9 – cell respiration Learning objective: How we get the energy we need Entry task: Why do we need oxygen?
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Today’s plan Start CO2 investigation Cell respiration equation
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CO2 investigation day 1 Why do you breathe more when you are exercising? Why do you need more oxygen? Energy for life video
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How does Bromothymol blue (BTB) work?
is a pH indicator for weak acids and bases Co2 is a weak acid. If co2 is added to a solution of water and BTB, the solution will turn color, from blue to light yellow Lets try it!!
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The cycle of photosynthesis and cellular respiration
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Compare contrast
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Cellular Respiration A chemical process that uses oxygen to convert the energy in organic molecules into ATP
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ATP = Adenosine Triphosphate
ATP = Energy “currency” for cell ATP provides energy for the cell to do three types of work: Chemical work = building large molecules Mechanical work = muscle contraction Transport work = getting ions across cell membrane
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Overview of what happens during cellular respiration and where
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CO2 investigation In your journal:
Think about what things you can test that would produce different amounts of exhaled CO2 Write what would the manipulated and the responding variables be? Write the investigative question for the experiment Write a hypothesis for this question (If…then…because…) You have 10 minutes!
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wednesday 12-16-15 Learning objective: Entry Task:
Determine How exercise affects the rate of exhaled CO2 Entry Task: Get materials ready at your table for the lab
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Plan of the day Co2 experiment – data collection
Write conclusion as homework if not finished during class
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CO2 investigation day 2 Read the procedures
make sure everybody in your group agrees on what the different types of activities/exercises you will be testing are Decide who will be performing what lab task and activity in your group Students blowing in the beaker and doing the BTB solutions need to wear goggles!!!!!!!! All materials need to be put back in bins cleaned and dried when you finish recording the data – thank you!!
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Post lab questions What types of gasses are in the air we breathe?
What do you think are the percentages of the gases in the air we breathe? What about the air we exhale? How do you think that compares to the air we inhale? What happens to our breathing as we exercise? Why do we breathe more when we exercise? We breathe more when exercising because we need the oxygen to break down food to produce energy and to release the carbon dioxide waste products that are produced
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Where does this extra carbon dioxide come from?
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Watch cell respiration vid
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From Science News magazine
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monday 2-2-15 Learning objective:
Describe how photosynthesis and Cellular respiration are related Explain how the ATP molecule works Entry Task: What is the purpose of cellular respiration and where in the cell does it happen?
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Plan of the day How cell respiration and photosynthesis are related
Cell respiration reactions ATP molecule
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The cycle of photosynthesis and cellular respiration
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Cellular Respiration A chemical process that uses oxygen to convert the energy in organic molecules into ATP
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ATP = Adenosine Triphosphate
ATP = Energy “currency” for cell ATP provides energy for the cell to do three types of work: Chemical work = building large molecules Mechanical work = muscle contraction Transport work = getting ions across cell membrane
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Overview of what happens during cellular respiration and where
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Cell Respiration Table
Stages Location ATP Glycolysis Cytoplasm of cell 2 Kreb Cycle Matrix of mitochondrion Electron Transport Chain & ATP Synthase Action Inner membrane of mitochondrion 32-34 Total ATP = 38
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Glycolysis Animation http://vcell. ndsu. nodak
Glycolysis Animation /movie-flash.htm Electron Transport Chain Animation ATP Synthase animation flash.htm
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Putting Chemical Energy to Work
Input Output 75% 25% 60% 40%
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Respiration Aerobic: A process that requires oxygen
Cellular respiration vs. breathing Both Bring in Oxygen and release CO2
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Cellular Respiration equation
C6H12O6 +6O2 6CO2 + 6H2O + 38ATP
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Tuesday 2-3-15 (sub today) Learning objective:
Determine how photosynthesis and Cellular respiration are related by studying the interactions of an aquatic plant and aquatic snails Entry Task: Get a handout from the front of the room and read the introduction to the virtual lab
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Plan of the day Virtual elodea and snail lab (Photosynthesis and cellular respiration) Day one
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wednesday 2-4-15 Learning objective:
Determine how photosynthesis and Cellular respiration are related by studying the interactions of an aquatic plant and aquatic snails Science class offerings Entry Task: In the virtual lab that you started yesterday, what was the experimental question you wrote?
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Plan of the day Science class offerings presentation
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thursday Learning objective: Determine how photosynthesis and Cellular respiration are related by studying the interactions of an aquatic plant with pond snails Entry Task: Write the equation for cellular respiration both in words and symbols
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Cellular Respiration equation
C6H12O6 +6O2 6CO2 + 6H2O + 38ATP
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Plan of the day Finish Virtual elodea and snail lab (Photosynthesis and cellular respiration) Day two Check 9.1 notes
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Elodea and snails virtual lab
If you are finished with the entire packet, get together with the other students that have finished too check your answers for the conclusion and discussion sections If you disagree with some of your classmates’ answers, have a discussion and see if you can come to an agreement.
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Friday Learning objective: Explain how energy is transferred through ecosystems by the processes of photosynthesis and cellular respiration Entry Task: why did you need to add the elodea plant in the virtual aquarium with snails in it? Bring your book next Tuesday to be rechecked at the library!!!
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ELODEA, SNAILS, & CO2 DARK LIGHT
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Plan of the day quiz
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Entry task quiz Write the entry task and learning objective for the following dates: 2-2-15 Points: 2 per entry task – 2 per answer – 2 per learning objective ----total 18
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WOW!! Co2 sensor
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