Exam 9: Cellular Respiration and Fermentation

Which of the following intermediary metabolites enters the citric acid cycle and is formed,in part,by the removal of a carbon (CO)from one molecule of pyruvate?

A proton-motive force is the conversion of ________ energy into ________ energy.

Where does glycolysis take place in eukaryotic cells?

Phosphofructokinase is an important control enzyme in the regulation of cellular respiration.Which of the following statements correctly describes phosphofructokinase activity?

It is possible to prepare vesicles from portions of the inner mitochondrial membrane.Which one of the following processes could still be carried on by this isolated inner membrane?

New biosensors,applied like a temporary tattoo to the skin,can alert serious athletes that they are about to "hit the wall" and find it difficult to continue exercising.These biosensors monitor lactate,a form of lactic acid,released in sweat during strenuous exercise.Which of the statements below is the best explanation of why athletes would need to monitor lactate levels?

The molecule that functions as the reducing agent (electron donor)in a redox or oxidation-reduction reaction

When electrons move closer to a more electronegative atom,what happens?