12-12-2011 Cellular Respiration Photosynthesis lab due today Drill: What is respiration? What kind...
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Transcript of 12-12-2011 Cellular Respiration Photosynthesis lab due today Drill: What is respiration? What kind...
12-12-2011 Cellular Respiration12-12-2011 Cellular Respiration
Photosynthesis lab due todayPhotosynthesis lab due today
Drill: What is respiration? What kind of Drill: What is respiration? What kind of organisms use respiration?organisms use respiration?
Chemical PathwaysChemical Pathways
Food provides living things with the Food provides living things with the chemical chemical building blocksbuilding blocks they need to they need to growgrow and and reproducereproduce..
Chemical Energy and FoodChemical Energy and Food
How much energy is in one gram of How much energy is in one gram of glucoseglucose?? 38113811 calories of calories of heat heat energyenergy A calorie is the amount of A calorie is the amount of energyenergy needed to needed to
raise the raise the temperaturetemperature of 1 gram of water 1 of 1 gram of water 1 degree Celsius.degree Celsius.
Cellular RespirationCellular Respiration
More energy is produced if it occurs in the More energy is produced if it occurs in the presence of oxygen.presence of oxygen.
Cellular Respiration Cellular Respiration is the process that is the process that releases energy by breaking down food releases energy by breaking down food molecules in the presence of oxygen.molecules in the presence of oxygen.
GlycolysisGlycolysis
The breaking down of glucose begins with The breaking down of glucose begins with GLYCOLYSIS. Occurs in the cytoplasmGLYCOLYSIS. Occurs in the cytoplasm
GlucoseGlucose
2 Pyruvic Acid2 Pyruvic Acid
Broken down into
GlycolysisGlycolysis
Glycolysis releases only Glycolysis releases only smallsmall amounts of amounts of engery. (2 ATP) no oxygen is required.engery. (2 ATP) no oxygen is required.
If If oxygenoxygen is present glycolysis leads to is present glycolysis leads to aerobic respiration aerobic respiration which releases a LOT which releases a LOT of ATP.of ATP.
If oxygen is If oxygen is NOTNOT present glycolysis leads present glycolysis leads to anaerobic respiration.to anaerobic respiration.
3 Steps of Cellular Respiration3 Steps of Cellular Respiration
1.1. Glycolysis: Glycolysis: The process that breaks The process that breaks down glucose into pyruvic acid.down glucose into pyruvic acid.
GlucoseGlucose
2 Pyruvic Acid2 Pyruvic Acid
2nd Step of Aerobic Respiration: 2nd Step of Aerobic Respiration: Krebs CycleKrebs Cycle
2. The 2. The Krebs CycleKrebs Cycle: occurs in the cristae of : occurs in the cristae of the mitochondriathe mitochondria
Pyruvic Acid is broken down to create high Pyruvic Acid is broken down to create high energy molecules & CO2energy molecules & CO2
One Pyruvic AcidOne Pyruvic Acid
OOne GTP (or ATP), three NADH, one QHne GTP (or ATP), three NADH, one QH22, ,
two COtwo CO22
3rd Step of Cellular Respiration3rd Step of Cellular Respiration
3.3. Electron Transport ChainElectron Transport Chain: Uses high energy : Uses high energy molecules to molecules to convert ADP into ATP convert ADP into ATP
ADP + P = ATP ADP + P = ATP
(the cells energy)! About (the cells energy)! About 36 ATP per glucose!36 ATP per glucose!
Fermentation (anerobic respiration)Fermentation (anerobic respiration)
Occurs when oxygen is Occurs when oxygen is NOTNOT present. present.
Releases energy from food molecules in Releases energy from food molecules in the the absenceabsence of oxygen. of oxygen.
TwoTwo main types of fermentation main types of fermentation Alcoholic FermentationAlcoholic Fermentation Lactic Acid FermentationLactic Acid Fermentation
Alcoholic FermentationAlcoholic Fermentation
Used by Yeasts and other microorganismsUsed by Yeasts and other microorganisms
Produces Produces Carbon DioxideCarbon Dioxide and and AlcoholAlcohol
Lactic Acid FermentationLactic Acid Fermentation
Production of Production of Lactic AcidLactic Acid
Produced in muscles during rapid exerciseProduced in muscles during rapid exercise
Discussion QuestionsDiscussion Questions
1.1. How much energy is in 1g of glucose?How much energy is in 1g of glucose?
2.2. In what cellular organelle does Cellular In what cellular organelle does Cellular Respiration take place?Respiration take place?
3.3. With which process does the breaking With which process does the breaking down of glucose begin?down of glucose begin?
4.4. What is the equation of Cellular What is the equation of Cellular Respiration? How does this compare to Respiration? How does this compare to the equation for Photosynthesis?the equation for Photosynthesis?
Discussion QuestionsDiscussion Questions
5. What are the three steps of Cellular 5. What are the three steps of Cellular Respiration?Respiration?
6. 6. What happens after glycolysis if no What happens after glycolysis if no oxygen is present?oxygen is present?
7. What are the two types of fermentation?7. What are the two types of fermentation?8. 8. What is produced from Alcoholic What is produced from Alcoholic
Fermentation?Fermentation?9. What is produced from Lactic Acid 9. What is produced from Lactic Acid
Fermentation?Fermentation?
Exit Ticket!!!!!!! Yay!!!!!!Exit Ticket!!!!!!! Yay!!!!!!
Describe the difference between aerobic Describe the difference between aerobic and anaerobic respiration. Include the and anaerobic respiration. Include the products of both processes.products of both processes.
Explain the full process of cellular Explain the full process of cellular respiration when oxygen is present.respiration when oxygen is present.
YAY EXIT TICKETYAY EXIT TICKET
Experimental ProblemExperimental Problem
Marty the Martian bought an aquarium to Marty the Martian bought an aquarium to grow his pet snails. On the aquarium’s grow his pet snails. On the aquarium’s instructions, it says that elodea must be instructions, it says that elodea must be placed in the aquarium with the snails. placed in the aquarium with the snails. Why does Marty need to have both elodea Why does Marty need to have both elodea and snails in the aquarium?and snails in the aquarium?
Design a procedure to answer this Design a procedure to answer this problem.problem.