possible pathways of making energy anaerobic: without oxygen aerobic: with oxygen step 1...
TRANSCRIPT
Possible Pathways of Making Energy
Glycolysis
Respiration Fermentation
Anaerobic: WITHOUT oxygen
Aerobic: WITH oxygen
Step 1
FERMENTATION AND CELLULAR RESPIRATION NOTES
LACTIC ACID FERMENTATION• Performed by some fungi, some
bacteria, and sometimes by our muscles
LACTIC ACID FERMENTATION
• Products include cheese, yogurt, and very sore muscles!
Alcohol Fermentaion• Performed by yeast and some kinds
of bacteria.
Alcohol Fermentaion• Products include CO2 and Ethanol
• Used to make beer, bread and wine
Alcohol Fermentation: (w/o oxygen)
C6H12O6 2 C2H5OH + 2 CO2 + 2ATPControlled by 11 enzyme
Alcoholic Fermentation
Time (hours)
Sugar
Yeast / Temp
Alcohol
GlycolysisGlucose 2 Pyruvate
RespirationFermentation
Lactic Acid Alcoholic
GlycolysisGlucose 2 Pyruvate
Respiration Fermentation
Lactic Acid Alcoholic
Examples:
1. In muscle cells while exercising.
2. Dairy products
Example:
1. To make alcoholic beverages using yeast & sugars.
Aerobic Anaerobic
C6H12O6 + 6 O2 6 H2O + 6 CO2 + 36 ATPenzymes
Aerobic Respiration: process in which oxygen is used by living cells to release the energy stored in food.
• Takes place in the mitochondria of eukaryotes, and in the cell membrane of prokaryotes (bacteria).
• Yields approximately 36-38 ATP.
respiration song
Movie about respiration
Draw and Label a Mitochondria
•Matrix: Pyruvate broken down into CO2 and H2O
•Cristae: 34 ATP Produced
•Flash animation highlighting Cristae
Cellular Respiration Review• Glycolysis: occurs in cytosol; breaks down
glucose into pyruvate. Makes 2 ATP.
• Pyruvate is then broken down further in the mitochondria to produce Water, Carbon Dioxide and 32-34 ATP.
Cellular respiration- 3 steps• Glycolysis: occurs in cytosol; breaks down glucose into
pyruvate. Makes 2 ATP.• Kreb’s Cycle: In mitochondrial matrix; pyruvate broken down
into carbon dioxide and electrons are carried to Electron Transport chain.
Makes 2 ATP.• Electron Transport
Chain: inner membrane of mitochondrion; electrons passed to oxygen and 32-34 molecules of ATP are made.
Respiration Animations
Animation of electron transport chain and atp synthesis
Online tutorial for respiration with animations
Summary:
– Photosynthesis- used in plant kingdom
6 CO2 + 6H2O C6H12O6 + 6 O2
– Respiration- used in highly organized organisms. (oxygen)
C6H12O6 + 6 O2 6H2O + 6CO2 + 36ATP
– Fermentation- used in yeast & bacteria. No oxygen
C6H12O6 2 C2H5OH + 2CO2 + 2ATP
Controlled by 11 enzyme
“white light”
chlorophyll
enzymes
• Which of these 3 release energy to organisms?
• Which captures energy & stores it?
• Which uses oxygen to yield more energy?– How much more energy?
• Which doesn’t use oxygen?• How does respiration
compare to photosynthesis when referring to
…energy? …Carbon dioxide? …Oxygen?
Compare Respiration & Fermentation in Lab using given data.