Glucose Metabolism

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					Glucose Metabolism
Glucose Molecule - REVIEW
  Glucose Molecule - REVIEW
• Relatively ________________________
  ________________________________
• However, there is LOTS of __________
  ________________________________
  _______________________________
      Glucose Metabolism
• A mechanism for __________________
  _______________________________
• Uses small _______________________
  _________________________________
  _________________________________
• Carried out by ______________
  _____________________
  _____________________
Chemical equation for harvesting
    energy from glucose?
   Recall…how did we GET glucose
          in the first place?
             Glucose Metabolism
•    Four steps
    1.   G
    2.   A
    3.   C
    4.   O
             Glycolysis
• First ____________________________
• Takes place ______________________
  _______________________________
• Definition:
Glycolysis
Glycolysis
            Glycolysis
• Uses __________________
• Generates _______________________
  _________________________________
• Overall products:
     Pyruvate travels to
      mitochondria….
…where it is converted to Acetyl CoA
   Conversion to Acetyl CoA
• Produces __________________________
• Acetyl CoA ________________________
• Acetyl CoA ________________________
  _________________________________
         Citric Acid Cycle
• Also known as ______________________
  _________________________________
  _________________________________
• Definition:
         Citric Acid Cycle
• A GRADUAL process…
• Produces _______________________
  _______________________________
• Energy-rich molecules are:
          Citric Acid Cycle
• Products of the CAC per molecule of
  glucose:
    Oxidative Phosphorylation
• Definition:
   Oxidative Phosphorylation
• Production of ______________________
  ________________________________
• This concentration acts ______________
  _________________________________
  _________________________________
• This energy gradient helps create ATP
• Another ____________________ reaction
Then, why is this lecture titled
   “Cellular Respiration”?
        Cellular Respiration
• The source of energy for life’s biochemical
  processes
• Definition:
        Cellular Respiration
• In humans, we inhale ___________
• This oxygen is used to produce ________
• We release (or exhale) _____________
  ________________________________
         Cellular Respiration
• Basic process ( oversimplification! ):
  – Release of energy from carbon-carbon bonds
  – This energy release forms ATP
  – To help these reactions, we USE oxygen and
    produce carbon dioxide
         Cellular Respiration

http://www.youtube.com/watch?v=xbJ0nbzt5Kw
 Other sources to produce ATP
• For humans and animals (or, at least for
  our cells!)
• We consume:
  – Carbohydrates
  – ??
  – ??
    Back-up systems for ATP
• _____________________
  – Fatty-acid chains can be broken into Acetyl
    CoA
    Back-up systems for ATP
• __________________
  – Can break down into amino acids, which can
    become pyruvate or acetyl CoA
   Other metabolic pathways?
• Lots of organisms/bacteria need energy
• There is a diversity of mechanisms to
  produce energy (ATP or glucose)
• Photosynthesis and Cellular Respiration
  are ____________ metabolic pathways
  – Metabolic pathways ________________
    __________________________________
                Fermentation
• _______________ metabolic pathway
  – Does not require oxygen to occur
• Definition:
      Alcoholic Fermentation
• Anaerobic process
• Recall “yeasts”?
  – Yeasts are eukaryotic organisms in the
    Kingdom Fungi
• Yeast cells give off alcohols and CO2 gas
  as byproducts in their production of energy

				
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