10.26.21 Flashcards
what is the first step in cellular respiration that begins releasing energy stored in glucose.
glycolysis
The carriers for energy and high energy electrons during gylcolysis are
NADH
If oxygen is NOT present, glycolysis is followed by
fermentation
3 carbon molecule produced when glucose is broken in half during glycolysis.
pyruvic acid (pyruvate)
does not require oxygen
anaerobic
How many ATP molecules are added to get glycolysis started?
2
sequence during cellular respiration?
glycolysis → Krebs cycle → Electron transport chain
Where do the carbon atoms in pyruvic acid end up following the Krebs cycle?
They become part of a carbon dioxide molecule and end up in the atmosphere
requires oxygen
aerobic
How many total ATP molecules are produced by 1 molecule of glucose completing cellular respiration?
38
produced by the Krebs Cycle?
FADH², CO², NADH
What molecule is the final electron acceptor at the end of the Electron transport chain?
oxygen to make H²O
The movement of which ion across the membrane from the intermembrane space to the matrix causes ATP synthase to spin and make ATP
H⁺ions
Which stage of cellular respiration produces the most ATP?
electron transport
what happens as electrons pass down the Electron Transport chain?
energy from H+ ions crossing back into the matrix causes ATP Synthase to make ATP, energy from the moving electrons transports H+ ions into the intermembrane space, and water is produced
what is the first step in cellular respiration that begins releasing energy stored in glucose
glycolysis
The carriers for energy and high energy electrons during glycolysis are…
NADH
How does the cell benefit from performing the Lactic Acid or Alcohol fermentation of pyruvate?
NADH is recycled back to NAD⁺ for use in glycolysis again
