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Cellular Respiration. A denosine T ri p hosphate. Universal energy carrier of the cell Active transport Reproduction Movement Muscle contractions Protein synthesis Hydrolysis of ATP ATP + H 2 O ADP + P i + Energy Energy used to produce heat & drive processes. Cellular Respiration.
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Adenosine Triphosphate • Universal energy carrier of the cell • Active transport • Reproduction • Movement • Muscle contractions • Protein synthesis • Hydrolysis of ATP ATP + H2O ADP + Pi + Energy • Energy used to produce heat & drive processes
Cellular Respiration C6H12O6 + 6O2 6CO2 + 6H2O + 36 ATP • Primarily in mitochondria • Chemical energy in glucose converted to ATP • Necessary for both consumers (heterotrophs) and producers (autotrophs)
Glycolysis • Start: Glucose (6-carbon molecule) • 2ATP energizes the glucose • Phosphate breaks from ATP • Glucose (6C) broken into two Pyruvates (3C) • Finish: Two pyruvates 4 ATPs NADH (H carriers)
Kreb’s Cycle (Citric Acid Cycle) • Step 1: Pyruvate broken down • Pyruvate (3C) is split into Acetic Acid (2C) and CO2 • More NADH created
Step 2: Coenzyme A • Acetic Acid (2C) combines with coenzyme A to create Acetyl-CoA (2C)
Step 3: Citric Acid formed • Acetyl-CoA (2C) binds with 4C molecule (from previous Kreb’s cycle) • Citric Acid (6C) created
Step 4: Citric Acid broken down • Citric Acid (6C) broken into 5C molecule • CO2 waste created • More NADH created
Step 5: 5C molecule broken down • 5C molecule broken down into 4C molecule • CO2 waste created • More NADH created • ATP created
Step 6: 4C molecule rearranged • Enzymes rearrange the 4C molecule • More NADH, FADH2 created
Kreb’s Summary • 2 Pyruvate molecules (from glycolysis) create: • 6CO2, 2ATP, 8NADH, 2FADH2
Electron Transport Chain • Step 1: Electrons removed • Electrons removed from NADH and FADH2
Step 2: Hydrogen Ions Transported • Proteins pump H+ ions across inner membrane of mitochondria • H+ ions accumulate
Step 3: ATP produced • H+ ions diffuse through protein channels to bind ADP + Pi • 34 ATP created
Step 4: Water created • Oxygen binds with H+ ions to create 6H2O as a waste