Flashcards in Cellular Respiration Deck (14):
A series of chemical reactions that occur in a cell to produce energy for the cell.
Readily available energy. Bond between second and third phosphate is really strong. When energy is needed for some process in the cell, cell will hydrolyze the bond which releases energy.
Primary Source of cellular food. Can be broken down to make ATP.
Many glucose molecules bonded together - its purpose is to store energy.
Stores energy as electrons on molecules called electron carriers.
NAD+ and FAD
Sugar Splitting. One molecule of glucose split into two molecules of pyruvate. Anaerobic
1 pyruvate = 1/2 glucose
Pyruvate Dehydrogenase Complex (PDC)
A group of enzymes - prepares pyruvate to enter Krebs Cycle. The pyruvate from glycolysis produces more reduced electron carriers and ATP. Aerobic
First molecule (glucose) is regenerated each time cycle is competed. Aerobic
Electron Transport and Oxidative Phosphorylation
Goal is to return electron carriers to "empty state"
Electron Transport Chain
NAD and FADH2 hand electrons to chain of carrier molecules - electrons are eventually given to oxygen, which forms water. Aerobic.
Special Protein - allows H+ ions out of mitochondrial matrix and into space space between membranes and less H+ in the matrix.
Regenerating empty electron carriers in the absence of oxygen.