Isovolumetric Ventricular Contraction

Initiates contraction of the ventricles

Intraventricular pressure rises sharply as the myocardium presses on the blood in the ventricle

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#Id: 3265

#Unit 6. System Physiology – Plant

Protein components of the mitochondrial electron-transfer chain

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#Id: 3269

#Unit 6. System Physiology – Plant

Agents that interfere with oxidative phosphorylation or photophosphorylation

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#Id: 3270

#Unit 6. System Physiology – Plant

Complex II as succinate dehydrogenase, the only membrane-bound enzyme in the citric acid cycle

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#Id: 3274

#Unit 6. System Physiology – Plant

Complex II contains five prosthetic groups and four different protein subunits;
a. Subunits A and B extend into the matrix; they contain three 2Fe-2S centers, bound FAD, and a
binding site for the substrate, succinate
b. Subunits C and D are integral membrane proteins, contain a heme group, heme b, and a binding
site for ubiquinone,

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#Id: 3275

#Unit 6. System Physiology – Plant

Complex III, also called cytochrome bc1 complex or ubiquinone;

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#Id: 3276

#Unit 6. System Physiology – Plant

cytochrome C oxidoreductase, couples the transfer of electrons from ubiquinol (QH2) to cytochrome c with the vectorial transport of protons from the matrix to the intermembrane space.