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Aerobic Cellular Respiration in Eukaryotes Questions and Answers 100% Verified
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Aerobic Cellular Respiration in Eukaryotes
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Aerobic Cellular Respiration inEukaryotes
In aerobic respiration oxygen is the final acceptor of electrons carried by NADH. -
answer true
Aerobic respiration occurs in plants and animals 24 hours per day. - answer true
Aerobic respiration in prokaryotes occurs in the cytoplasm and on the folds of the cell
membrane, NOT in mitochondria. Why? - answer?
Aerobic respiration is ___% more efficient than anaerobic respiration (fermentation). -
answer95
Four stages of aerobic respiration: - answer1. Stage I: glycolysis- takes place in cell
cytoplasm
2. Stage II: Prep step to the Krebs cycle- takes place in matrix of mitochondria
3. Stage III: Krebs cycle- takes place in matrix of mitochondria
4. Stage IV: Electron transport chain- takes place in inner membrane of the
mitochondria
Stage I: Glycolysis= "splitting of glucose" - answer- reactions occur in cytoplasm
- series of 9 enzyme mediated biochemical reactions
- net results: 1 molecule of glucose is oxidized to produce:
2 ATP- produced by substrate level phosphorylation
2 NADH- utilized in ETC
2 pyruvate (3C)- enter the matrix of mitochondria to start prep step
Stage II: Prep Step: - answer- reactions occur in matrix of mitochondria
- series of enzyme mediated reactions which:
1 molecule pyruvate is oxidized to 1 molecule of acetyl
coenzyme A binds to acetyl -> acetyl-CoA
1 NADH is produced which is used in Stage IV
1 CO2 is produced which diffuses out of mitochondria, out of cell and out of organism
Since 2 molecules of pyruvate enter this step one at a time, the NET results are
2 Acetyl-CoA
2 NADH
2 CO2
Stage III: Krebs Cycle - answer- reactions occur in matrix of mitochondria
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