Cellular Respiration

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Cellular Respiration

• Do Now
• 1. Take out homework
• 2. What do you think respiration is? Is it the
  same as cellular respiration?

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Cellular Respiration

• Is a complex biochemical pathway that breaks down
  organic chemicals in order to make ATP.

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There are two main types of respiration

• Aerobic respiration requires oxygen
• Anaerobic respiration does not require oxygen.

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Glycolysis The 1st Step
Glucose is split in half, which releases some
energy. The cell can make 2 ATP molecules from 2
ADP P using the energy. Pyruvic acid is the
end-product. Energy-carrying molecule NAD is
also recharged with electrons.
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The products of glycolysis are used in two
different ways
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Our Respiration Experiment
Yeast are unicellular eukaryotes. They are
facultative anaerobes. Organisms like these can
perform both aerobic or anaerobic respiration.
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Yeast Without Oxygen produce Alcohol.
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Yeast with oxygen respire just like humans
aerobicaly.
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Hypothesize Predict!
Read the Introduction to the lab, and formulate
your hypothesis and prediction based on what you
already know about living things.
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Fermentation Chemical Recycling
Alcoholic Fermentation
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Lactic Acid Fermentation you do this!
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Aerobic Respiration

• 3 main steps
• Glycolysis splits sugar into 2 pyruvate molecules
• Krebs Cycle burns pyruvate to make energy CO2
• E- trans. Chain in mitochondria produces MANY
  MANY ATP

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Recap

• Cellular Respiration Is
• Two types
• 1st step
• Whats the point?
• Homework Read pp. 127-130, finish skeleton
  notes for 7.1