Basic Process of Photosynthesis

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Basic Process of Photosynthesis
Sun LIGHT
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Basic Process of Photosynthesis
H2O
CO2
Sun LIGHT
Light Dependent Reactions
Calvin Cycle
CHRLORPLAST
O2
Sugars
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(No Transcript)
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Chemical Pathways

• Living things get the energy they need from food
• Both plant animal cells carry out final stages
  of cellular respiration

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Remember ATP?

• ATP stores energy for cell activities like active
  transport movement within the cell

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EQUATION FOR CELLULAR RESPIRATION
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It's Photosynthesis Backwards!!!
EQUATION FOR CELLULAR RESPIRATION
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Cellular Respiration

• Process that releases energy by breaking down
  glucose other food molecules in the presence of
  oxygen
• Three Stages
• Glycolysis
• Krebs Cycle
• Electron Transport Chain

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GLYCOLYSIS

• Breaks down Glucose (6-carbon sugar) into
  2 molecules of Pyruvic Acid (3-carbon
  compound)
• The products are
• 2 Pyruvic Acid molecules
• 2 ATP molecules
• 2 NADH molecules

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Glycolysis has 2 pathways

• If Oxygen is present (Aerobic) ...Krebs Cycle
  then to Electron Transport Chain
• If Oxygen is absent (Anaerobic) Fermentation
  (directly to Electron Transport Chain)

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FERMENTATION(Aanerobic Pathway)
2 TYPES Alcoholic Lactic Acid

• Alcoholic
• Yeast other microorganisms use this to produce
  alcohol CO2 as wastes.
• Beer is a beverage made by alcoholic fermentation

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FERMENTATION(Aanerobic Pathway)

• Lactic Acid
• Exercise causes the body needs more oxygen for
  respiration to make more ATP
• Body resorts to lactic acid fermentation to make
  ATP
• Lactic Acid is also produced causing burning
  sensation in muscles

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Glycolysis has 2 pathways

• If Oxygen is present (Aerobic) ...Krebs Cycle
  then to Electron Transport Chain
• If Oxygen is absent (Anaerobic) Fermentation
  (directly to Electron Transport Chain)

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KREBS CYCLE(Aerobic Pathway)

• Pyruvic Acid is broken down into CO2 in a series
  of energy extracting reactions

• Hans Kreb
• SEE P.226
• Discovered citric acid cycle, Krebs Cycle

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ELECTRON TRANSPORT CHAIN

• Uses high energy electrons from the Krebs Cycle
  to convert ADP to ATP!!!
• O2 is the final electron acceptor in the electron
  transport chain

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Cellular Respiration

• Process that releases energy by breaking down
  glucose other food molecules in the presence of
  oxygen
• Glycolysis sets
• the stage for
• Cellular Respiration
• Two Stages
• Krebs Cycle
• Electron Transport Chain

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Cellular RespirationMini-Lab

• Clear your desk (except for pencil or pen)
• Write the title above on notebook paper
• Complete the Mini-lab (procedures observations)
  
• Answer the questions on both sides
• Turn-in work to class basket when you finish
• (we will discuss it in class)

You Have 15 min.!!!