Cell metabolism

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Cell metabolism
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Breakdown of glucose

• Without oxygen anaerobic catabolism
• Location cytoplasm
• Into lactic acid
• Process called glycolysis
• Produces little ATP

GLUCOSE
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• With oxygen aerobic catabolism
• Location cytoplasm mitochondria
• Forms CO2, H2O, and lots of ATP
• Uses enzymes
• Steps glycolysis, Krebs, Electron transport chain

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No glucose?

• Breakdown protein and reconstruct into glucose
  regulates blood glucose levels

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Metabolism of lipids

• Anabolic
• excess calories (energy) deposited in adipose
  tissue
• Catabolic
• Enters Krebs cycle
• Release more ATP than carbsWHY?

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ENZYMES
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• Catalysts in living things
• Reduce required energy for metabolism
• substrate enzyme --------gt enzyme substrate
  complex -----------gt enzyme products.
• Induced fit at active site/lock key
• Examples
• Digestive break down protein, carbs, fats
  (sucrase, lactase, amylase)
• Metabolic Polymerases (DNA/RNA synthesis),
  Thrombin (blood clotting)

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REVIEW

• CATABOLISM? ANABOLISM?
• HOW IS THE SIZE OF A COMPOUND RELATED TO ITS
  POTENTIAL ENERGY
• WHAT TYPE OF COMPOUND CONTAINS THE MOST ENERGY?
• WHAT 2 TYPES OF COMPOUNDS ARE THE IDEAL ENERGY
  SOURCE OF THE BODY?

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• WHAT IS THE END RESULT OF ANAEROBIC RESPIRATION?
• DOES ANAEROBIC OR AEROBIC RESPIRATION PRODUCE
  MORE ATP?
• WHAT STEPS OF CELL RESPIRATION DO LIPIDS GO
  THROUGH?

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• WHERE IN THE CELL DOES ANAERBIC CELL RESPIRATION
  OCCUR?
• WHERE IN THE CELL DOES AEROBIC RESPIRATION OCCUR?
• WHAT ARE THE NAMES OF THE STEPS OF AEROBIC?
• WHAT ARE THE NAMES OF THE STEPS OF ANAEROBIC?