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All organisms require energy
• Energy molecule of the cell is ATP
– Nucleic acid
Energy released
ATP ADP
Two main energy releasing
pathwaysAerobic
• Requires oxygen
• Occurs in cytoplasm and
mitochondria
• Creates 36 ATP
Anaero...
Aerobic Respiration: An Overview
C6H1206 + 6O2 6CO2 + 6H20 + 36 ATP
1. Glycolysis
• Enzymes break glucose into two 3 carbo...
2
2
32
Anaerobic Respiration:
Fermentation
• Does not require oxygen
• Does not require a mitochondria
• Only produces 2 ATP
• 2 ...
1. Lactic Acid Fermentation
– Used by bacteria and human muscle
1. Alcoholic Fermentation
– Used by yeasts
Today’s Experiment
• Track aerobic respiration in insects
• What are some reasons why insects require
energy?
• Compare be...
Carbon dioxide Sensor
• What do you expect to observe with carbon
dioxide levels in the insects?
• Will one insect have hi...
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Respiration lab Biology I

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Biology I lab about cellular respiration

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Respiration lab Biology I

  1. 1. All organisms require energy • Energy molecule of the cell is ATP – Nucleic acid Energy released ATP ADP
  2. 2. Two main energy releasing pathwaysAerobic • Requires oxygen • Occurs in cytoplasm and mitochondria • Creates 36 ATP Anaerobic • Doesn’t require oxygen • Uses another molecule like nitrate or sulfate • Occurs completely in cytoplasm • Fermentation is an example • Two types
  3. 3. Aerobic Respiration: An Overview C6H1206 + 6O2 6CO2 + 6H20 + 36 ATP 1. Glycolysis • Enzymes break glucose into two 3 carbon pyruvate molecules 1. Krebs Cycle • Enzymes break pyruvate into CO2 • Electrons and H+ released • Electron Transport Chain • Many ATP made because of H+ and electron gradient • Oxygen joins with H+ forming the product water
  4. 4. 2 2 32
  5. 5. Anaerobic Respiration: Fermentation • Does not require oxygen • Does not require a mitochondria • Only produces 2 ATP • 2 options
  6. 6. 1. Lactic Acid Fermentation – Used by bacteria and human muscle 1. Alcoholic Fermentation – Used by yeasts
  7. 7. Today’s Experiment • Track aerobic respiration in insects • What are some reasons why insects require energy? • Compare bean beetles to pill bugs
  8. 8. Carbon dioxide Sensor • What do you expect to observe with carbon dioxide levels in the insects? • Will one insect have higher aerobic respiration than another insect? • Although we are not measuring oxygen what is happening to oxygen levels? • Which insect do you think will undergo more respiration?

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