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900040
8.2 Cell Respiration
Descripción
DP (08 Metabolism, Cell Respiration, and Photosynthesis) IB Biology Mapa Mental sobre 8.2 Cell Respiration, creado por Steve Harton el 19/05/2014.
Sin etiquetas
cell
respiration
ib biology
08 metabolism, cell respiration, and photosynthesis
dp
Mapa Mental por
Steve Harton
, actualizado hace más de 1 año
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Creado por
Steve Harton
hace alrededor de 10 años
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Resumen del Recurso
8.2 Cell Respiration
Nature of Science
Paradigm shift: the chemiosmotic theory led to a paradigm shift in the field of bioenergetics
TOK
Peter Mitchell's chemisosmotic theory encountered years of opposition before it was finally accepted
For what reasons does falsification not always result in an immediate acceptance of new theories or a paradigm shift
Structure of mitochondrion
Electron tomography used to produce images of active mitochondria
Annotation of a diagram of a mitochondrion
Analysis of diagrams of the pathways of aerobic respiration
Redox reactions
Oxidation
Oil: Oxidation Is Loss of electrons
Reduction
RIG: Reduction Is Gain of electron
Glycolysis
Glucose is converted to pyruvate in the cytoplasm
Phosphorylation
Lysis
Oxidation
Small net gain of ATP
Link reaction
Pyruvate
Oxidative Decarboxylation
H is removed from pyruvate
H is accepted by NAD+ giving NADH + H+
CO2 production
Pyruvate converted into an acetyl group
Acetyl group accepted by coenzyme A (CoA)
Acetyl CoA enters the Krebs cycle
Krebs cycle
Oxidation of the acetyl groups
Reduction of H carriers
Decarboxylation
Substrate level phosphorylation
ATP Formation
Release of CO2
NADH + H+ = NAD+ FADH2 + H+ = FAD
Energy released by oxidation reactionsis carreid to the cristae fo the mitochondrai by reduced NAD+ and FAD
Electron Transport Carriers (ETC)
Transfer of electrons between carriers in the electron transport chain in the membrane of the cristae is coupled to proton pumping
Oxidative phosphorylation = Chemiosmosis
Protons diffuse through ATP synthase to generate ATP
Oxygen is needed to bind with the free protons to maintain the H gradient
Water formation
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