Cellular Respiration Chapter 7. Obtaining Food Autotrophs – producers – photosynthesis...
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Transcript of Cellular Respiration Chapter 7. Obtaining Food Autotrophs – producers – photosynthesis...
Obtaining FoodObtaining Food
Autotrophs – producers – photosynthesisAutotrophs – producers – photosynthesis
Heterotrophs – consumers – cellular Heterotrophs – consumers – cellular respirationrespiration
Main Forms of EnergyMain Forms of Energy
Energy Energy > ability to perform work> ability to perform work Kinetic Kinetic > Energy of motion > > Energy of motion >
Thermal Thermal energyenergy PotentialPotential > Energy stored due to an > Energy stored due to an
objects position or arrangement > objects position or arrangement > ChemicalChemical energy energy
Calorie – A Unit of EnergyCalorie – A Unit of Energy CalorieCalorie > the amount of energy > the amount of energy
required to raise the temperature of 1 required to raise the temperature of 1 gram (g) of water by 1 degree Celsius gram (g) of water by 1 degree Celsius (°C) (°C)
1,000 calories = 1 kilocalorie (1,000 calories = 1 kilocalorie (kcalkcal)) We burn calories for work through the We burn calories for work through the
process of process of cellular respirationcellular respiration
ATP = Adenosine triphosphateATP = Adenosine triphosphate ATP = Energy “currency” for cellATP = Energy “currency” for cell ATP provides energy for the cell to do ATP provides energy for the cell to do
three types of work:three types of work: Chemical workChemical work = building large = building large
moleculesmolecules Mechanical workMechanical work = muscle contraction = muscle contraction Transport workTransport work = getting ions across = getting ions across
cell membranecell membrane
When sugar is burned, oxygen atoms pull When sugar is burned, oxygen atoms pull electrons from carbon and hydrogen, forming new electrons from carbon and hydrogen, forming new chemical bonds. chemical bonds.
Online activity 7.2Online activity 7.2
In a Venn diagram write the In a Venn diagram write the similarities and differences similarities and differences between the marshmallow being between the marshmallow being consumed by the fire and by Tom consumed by the fire and by Tom
Electron Transport ChainElectron Transport Chain
An electron transport chain is like a staircase, as electrons move down each step in the chain, a small amount of energy is released.
Overview of what happens during Overview of what happens during cellular respiration and where (p cellular respiration and where (p 148)148)
Cell Respiration TableCell Respiration Table
StagesStages LocationLocation ATP ATP
GlycolysisGlycolysis Cytoplasm of cellCytoplasm of cell 22
Kreb CycleKreb Cycle Matrix of Matrix of mitochondrionmitochondrion 22
Electron Transport Electron Transport Chain & ATP Chain & ATP
Synthase ActionSynthase Action
Inner membrane of Inner membrane of mitochondrionmitochondrion 32-3432-34
Total ATP = 38
Where does oxygen go when you breath ?Where does oxygen go when you breath ? What is in the muscle cell that uses the What is in the muscle cell that uses the
oxygen?oxygen?
Fermentation is an anaerobic processFermentation is an anaerobic process
Fermentation in human muscle cellsFermentation in human muscle cellsATP is produced in the absence of ATP is produced in the absence of
oxygenoxygenThe byproduct of fermentation is lactic The byproduct of fermentation is lactic
acidacid Fermentation in microorganismsFermentation in microorganisms
Yeasts are capable of cellular respiration Yeasts are capable of cellular respiration and fermentationand fermentation
The byproduct of fermentation is alcoholThe byproduct of fermentation is alcoholSome other fungi and bacteria produce Some other fungi and bacteria produce
lactic acid (use in the production of lactic acid (use in the production of cheese and yogurt)cheese and yogurt)