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Cellular Respiration and Fermentation

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Presentation on theme: "Cellular Respiration and Fermentation"— Presentation transcript:

1 Cellular Respiration and Fermentation

2 Energy cycle ATP Photosynthesis Cellular Respiration sun CO2 O2 H2O
even though this equation is a bit of a lie… it makes a better story sun Energy cycle Photosynthesis CO2 H2O C6H12O6 O2 light energy + H2O plants CO2 glucose O2 animals, plants CO2 H2O C6H12O6 O2 ATP energy + Cellular Respiration ATP The Great Circle of Life,Mufasa!

3 ATP ATP is biological energy ATP + water  ADP + P = energy
When you break the bond you get energy ATP = stored energy ADP = used energy

4 Cellular Respiration Process that releases energy by breaking down glucose and other food molecules in the presence of oxygen. 6CO2 6H2O C6H12O6 6O2 ATP energy + 38 ATP produced Glucose

5 If no oxygen is present then fermentation occurs Cytoplasm
Oxygen required 2 ATP needed If no oxygen is present then fermentation occurs Cytoplasm CO2 released 4 ATP produced 2 ATP produced 34 ATP produced

6 Glycolysis (occurs in cytoplasm)
Break down glucose into 2 pyruvate molecules Glucose has 6 carbon Pyruvate has 3 carbon No oxygen in required (anaerobic) Needs 2ATP to happen Generates 4ATP Net gain of 2ATP at the end of the process

7 After Glycolysis If oxygen is present, pyruvate moves to mitochondria where cellular respiration occurs. If not oxygen is present, pyruvate is used for alcoholic or lactic acid fermentation.

8 Cellular respiration occurs in two steps
Kreb’s cycle or citric acid cycle Produced 2ATP Electron transport chain Produced 34 ATP Both processes require oxygen and occur in the mitochondria

9 Kreb’s cycle Pyruvic acid produced from glycolysis is used to make
Carbon dioxide NADH ATP FADH2 4 ATP are produced for immediate use for cell processes NADH and FADH2 carry electrons to the electron transport chain to make more energy CO2 is released from the cell

10 Electron transport chain
The ETC used high energy electrons from the Kreb’s cycle to convert ADP to ATP. ETC is composed of a series of carrier proteins in the inner membrane of the mitochondria. Water is produced and released at the end of the ETC. 34 ATP are produced in the end


12 Fermentation Two types Alcoholic fermentation Lactic acid fermentation
Both processes do not require oxygen (anaerobic) and occur after glycolysis.

13 Alcoholic fermentation
Yeasts and a few other microorganisms use this process CO2 bubbles that are released from this process cause bread to rise. Also used to make beer and wine

14 Lactic acid fermentation
Occurs in humans and other eukaryotes Muscle cramps are caused by a build up of lactic acid When you exercise vigorously, the large muscles run out of oxygen quickly. Your muscles quickly produce ATP using lactic acid fermentation. Lactic acid builds up which causes your muscles to ache.

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