What color is the dress? Blue and black, or White and gold?
Stress Test The following photo has 2 identical dolphins in it. Look at both dolphins jumping out of the water. The dolphins are identical. A closely monitored, scientific study group revealed that in spite of the fact that the dolphins are identical, a person under stress would find differences in the two dolphins. If the subject found many differences between the dolphins, it meant that the person was experiencing a great amount of stress. Look at the photograph, and if you find more than one or two differences you may want to take a vacation……
Energy Investigation Stations Essential Question: 1.How do our cells determine who we are? 2.How do living things get energy needed for life?
1. Write the equation for cellular respiration using both symbols and words: C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O + energy Glucose (sugar) oxygenCarbon dioxide waterATP Station #1: Exercise & Energy
3. Which time was faster? How do you explain this in terms of cell respiration? 2 nd time, after exercise. More exercise means you need more energy. Need to break down more glucose and oxygen for energy. That means more carbon dioxide produced as waste.
Station #2: ATP = ENERGY ASAP 4. Use the diagram on p. 203 to draw a picture of an ATP molecule and ADP molecule below:
5. How is cell respiration like breaking a $100 bill into $1 bills? Which bill is ATP like? Cell respiration = breaking large energy glucose molecule into smaller energy ATP molecules. ATP is like $1 bill because has less energy than glucose, but in more usable form.
6. Use the tinker toy pieces at this station to construct a model of an ATP molecule like the one on p. 203. Use the model to demonstrate how ADP and ATP are used to store and release energy for cells. Get teacher initials here to confirm your understanding: ______________ Energy released from ATP by breaking off 3 rd phosphate, forming ADP Energy stored by adding 3 rd phosphate to ADP, forming ATP
Cell Respiration: C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O + energy glucoseoxygenCarbon dioxide waterATP 36 ADP 36 ATP
STATION #3: MAKING MOLECULES (PHOTOSYNTHESIS) 7. Write the equation for photosynthesis using both symbols and words: 6CO 2 + 6H 2 O + (energy) C 6 H 12 O 6 + 6O 2 Carbon dioxide water light Glucose (sugar) oxygen
10. How many carbon atoms go into photosynthesis? _____ How many come out? _______ 11. How many hydrogen atoms go into photosynthesis? _____ How many come out? _______ 12. How many oxygen atoms go into photosynthesis? ________ How many come out? ______ 6 6 12 18
13. How many molecules of carbon dioxide do plants need to make one molecule of glucose? Explain why this is so. 6 Glucose molecule needs 6 carbon atoms; each carbon dioxide molecule only has 1 carbon atom.
AB C D E F G H Cell wall nucleus DNA cytoplasm mitochodrion chloroplast Cell membrane vacuole 14.
15. In which cell structure does photosynthesis take place? 16. In which cell structure does cell respiration take place? chloroplasts mitochondria Elodea leaf cells chloroplasts
17. Would a plant be able to live without chloroplasts or mitochondria? Explain why or why not. No. Without chloroplasts couldn’t make sugar for food. Without mitochondria, couldn’t break down sugar to get energy.
Photosynthesis Investigation 1 Before After (in dark)After (in light) A A A B B B C C C D D D
STATION #5: INTERDEPENDENCE & INTERCONNECTIONS 18. Take a look at the plant in the flask A. What color would you expect the bromothymol blue solution in flask B to be after 24 hours? (bromothymol blue is yellow in the presence of carbon dioxide, blue in the presence of oxygen). Explain your answer. Blue Plant will produce oxygen from photosynthesis.
19. Take a look at the animal(s) in the flask C. What color would you expect the bromothymol blue solution in flask D to be after 24 hours? Explain your answer. Yellow Fish will produce carbon dioxide from cell respiration.
20. The jar labeled E contains snails and water plants, and has been sealed airtight for more than 3 months. Explain how this closed system illustrates the idea that parts of living systems are interdependent (dependent on each other) and interconnected (connected to each other). Plants make O 2 for snails. Snails make CO 2 for plants. Same water goes through both.
21. What happened to the burning marshmallow after you covered it with the glass jar? 22. Marshmallows are made up mainly of sugar. What does this station tell you about burning sugar and cell respiration? 23. Use what you learned at this station to explain why you breathe harder when exercising. Went out Both need oxygen to happen. Need more oxygen to break down more sugar for energy.
STATION #7: AUTOTROPHS & HETEROTROPHS 24. What is the difference between an autotroph and a heterotroph? Autotrophs can make their own food; heterotrophs have to eat other living things for energy.
25. Identify each specimen at this station by name. Is it autotroph, heterotroph, or both? Name Autotroph, heterotroph, or Both? a._______________________ ______________________ b._______________________ ______________________ c._______________________ ______________________ d._______________________ ______________________ e._______________________ ______________________ f._______________________ ______________________ g._______________________ ______________________ h._______________________ ______________________ sponge Both mouse bacteria gecko plant octopus Both Venus fly trap Heterotroph Autotroph Heterotroph coral Both Spirogyra (algae)Autotroph
26. Why do living things need energy? Give 4 examples of life processes that require energy. Moving Breathing Heart beating Thinking Reproducing Digesting food Transporting things in & out of cells Making more cells, more proteins
STATION #8: MAKING MOLECULES (CELL RESPIRATION) 27. Write the equation for cell respiration using both symbols and words: C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O + energy Glucose (sugar) oxygen Carbon dioxide water ATP
30. Explain how cellular respiration and photosynthesis are opposite processes. Photosynthesis makes sugar, cell respiration breaks it down. The equation for CR is the opposite of photosynthesis. glucose (sugar) glucose (sugar)
31. Suppose you came home and found a family member unconscious on the floor. What are the first two vital life functions you should check for? Explain in terms of cell respiration why these two functions are so important to check. Breathing and pulse. Breathing: make sure taking in oxygen for CR Pulse: make sure oxygen being pumped to all organs and cells so they can do CR. Without oxygen, cells can’t break down glucose for energy. Without energy they die, you die.