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Cell metabolism Breakdown of glucose Without oxygen: anaerobic catabolism Location: cytoplasm Into lactic acid Process called glycolysis Produces little ATP GLUCOSE With oxygen: aerobic catabolism Location: cytoplasm & mitochondria Forms CO2, H2O, and lots of ATP Uses enzymes Steps: glycolysis, Krebs, Electron transport chain No glucose? Breakdown protein and reconstruct into glucose – regulates blood glucose levels Metabolism of lipids Anabolic: excess calories (energy) deposited in adipose tissue Catabolic: Enters Krebs cycle Release more ATP than carbs…WHY? ENZYMES Catalysts in living things Reduce required energy for metabolism substrate + enzyme --------> enzyme substrate complex ----------> 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) 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? 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? 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?
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