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Cellular Respiration

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by

Leah Seal-Gray

on 22 March 2013

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Transcript of Cellular Respiration

In Detail Glycolysis Citric Acid Cycle Pyruvate Oxidation Energy Investment Phase Energy Payoff Phase ATP are used to break down and rearrange one glucose molecule The process of breaking down the glucose into 2 pyruvate continues, but ATP and NADH are created in the process IN:
1 glucose
2 ATP
OUT:
2 Pyruvate
4 ATP
2 NADH
2 H2O An intermediate step where pyruvate enters the mitochondria Occurs in the cytoplasm each pyruvate loses a CO2, and a
coenzyme A is added to make
one Acetyl CoA. An NADH is
charged in the process IN:
2 Pyruvate
OUT:
2 Acetyl CoA
2 NADH
2 CO2 Acetyl CoA enters the cycle when it is combined with Oxaloacetate The Citrate formed is decomposed as the cycle progresses. H20 is used and the byproducts are released during this process. A new oxaloacetate is left. IN:
2 Acetyl CoA
4 H2O
OUT:
2 H2O
4 CO2
2 ATP
6 NAHD
2 FADH2 Electron Transport Chain Chemi-osmosis Fermentation Oxidative Phosphorylation C6H1206 + 602 = 6H2O + 6O2 +ATP An Overview Glycolysis Citric Acid Cycle This step maintains a concentration gradient of H+ so that chemiosmosis works, Pyruvate Oxidation Energy Investment Phase Energy Payoff Phase Electron Transport Chain Electrons provided by NADH and FADH2 move down a chain of proteins. The energy this process provides is used to pump H+ out of the matrix Chemiosmosis At the end of the chain, free electrons (ie - H) are passed off onto oxygen to form H20 protons (H+) diffuse passively through the ATP Synthase, causing a rotor within the synthase to turn, which produces energy The energy is used to produce ATP Most of the ATP produced during respiration is produced during this step The ATP Synthase is super efficient, because it's powered by diffusion. Yay for concentration gradients! The proteins in this step are all embedded in the inner mitochondrial membrane. IN:
10 NADH
2 FADH2
3 O2 OUT:
28 ATP
6 H2O Flow of electron carriers Flow of glucose components Oxidative Phosphorylation Aerobic Respiration:
W/ O2
CELLULAR Anaerobic Respiration:
No O2
Fermentation Alcohol Glycolysis occurs, and the resulting pyruvate is then altered. The resulting molecule serves as the electron acceptor. occurs between the membranes of the mitochondria. The cycle occurs twice - once for each Acetyl CoA Have Some Diagrams Glycolysis Pyruvate Oxidation Citric Acid Cycle Oxidative Phosphorylation Lactic Acid Some Background Oxidation is the LOSS of electrons.
Reduction is the GAIN of electrons. Electron carriers (NADH/NAD+, FADH2/FADH) are oxidized and reduced during respiration. Oxidation Energy is stored in the bond on the third phosphate. Breaking this bond provides energy for your body. ATP Called ADP in it's low energy state Phosphorylation: When the third phosphate group is added to ADP to make ATP Mitochondria A cell organalle with two membranes. Most of cellular respiration takes place here.
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