Cellular Respiration Flashcards
Cell respiration equation
Glucose + Oxygen -> Energy + Carbon Dioxide + Water
Energy
Capacity to bring about movement against an opposite force
Four steps of cellular respiration
Glycolysis
Transition Reaction
Citric Acid Cycle
Electron Transport Chain
Glycolysis
Occurs in cytoplasm; does not require oxygen; uses 2 ATP to split glucose into two pyruvates
What does Glycolysis produce?
4 ATP
2 NADH
Electron Carriers
Transfer electrons from one molecule to another
What is NADH?
An electron carrier molecule (Nicotine adenine dinucleotide)
Transition Reaction
Occurs in mitochondria; prepares pyruvate for Citric Acid Cycle
Transition Reaction Process
1) one carbon removed from pyruvate
2) NADH formed when NAD+ gains 2 electrons and a proton
3) two-carbon molecule bonds to Coenzyme A
What does the Transition reaction produce per pyruvate?
1 Carbin Dioxide waste
1 NADH
1 Aceytl CoA
Citric Acid Cycle
Completes the breakdown of glucose; takes two turns to do so
What does the Citric Acid Cycle produce for each Acetyl CoA?
2 Carbon Dioxide waste
1 ATP
3 NADH
1 FADH2 (flavin adenine dinucleotide)
Electron Transport Chain
Electrons from NADH and FADH2 are used to pump H+ against gradient; electrons flow through ATP synthase which makes ATP
Where do electrons go in the Electron Transport Chain?
They are given to Oxygen to produce water
What does the Electron Transport chain produce?
About 32 ATP (per glucose)
