The electron transport system in bacteria involves: a proton motive force and oxidative phosphorylation proton transfer through cytochromes oxygen as the sole final electron acceptor a proton motive force and substrate level phosphorylation

Draw the complete electron pushing mechanism that is enzyme catalyzed.

What is the terminal electron acceptor in photo- phosphorylation? 1 02 2 H2O 3 CO2 4 NADP+

The establishment of the proton gradient is a very important part of photosynthesis. Briefly explain how the gradient is formed, where it occurs within the cell, and what is its role in photosynthesis.

A proton gradient is produced by the electron transport chain.  Which compartment in the mitochondria contains the high concentration of protons?

In one of the steps of glycolysis, the enzyme pyruvate kinase catalyzes the conversion of phosphoenolpyruvate to pyruvate; the phosphate group from phosphoenolpyruvate is transferred to ADP to form ATP during the reaction. This process is an example of: A) O ATP synthesis by substrate-level phosphorylation B) O coupling an energy releasing process to an energy requiring process C) O oxidative phosphorylation D) OB and C are correct E) OA and B are correct

. The anaerobic, chemoautotrophic archaeobacterium Methanococcus jannaschii uses which of the following carbon-fixation pathways to obtain organic carbon from CO2? the Hill reaction the Wood-Ljungdahl pathway the Calvin cycle oxygenic photosynthesis the Krebs cycle

Unlike a rabbit, running all-out for a few moments to escape a predator, migratory birds require energy for extended periods of time. For example, ducks generally fly several thousand miles during their annual migration. The flight muscles of migratory birds have a high oxidative capacity and obtain the necessary ATP through the oxidation of acetyl-CoA (obtained from fats) via the citric acid cycle. Compare the regulation of muscle glycolysis during short-term intense activity, as in a fleeing rabbit, and during extended activity, as in the migrating duck. Why must the regulation in these two settings be different? Extended activity requires the highly efficient anaerobic metabolism of fats, rather than the less efficient aerobic metabolism of glucose. Extended activity requires the highly efficient aerobic oxidation of fats, rather than the less efficient anaerobic metabolism of glucose. Extended activity stimulates glycolysis because the concentrations of citrate and acetyl-CoA are…

Red blood cells are responsible for transporting oxygen, throughout the body. True False

Which of the following membranes or compartments can be found in both a cyanobacterial cell and a typical photosynthetic eukaryotic cell? the inner nuclear membrane the outer mitochondrial membrane the mitochondrial matrix the inner mitochondrial membrane the thylakoid membrane