Which statements are correct about how chemoheterotrophic aerobes produce their ATP?SELECT ALL THAT APPLYLactic acid is the first product of the glycolytic pathway.Photosynthesis is used to produce glucose, which is then broken down during glycolysis.H2S is the final electron acceptor of the electron transport chain (ETC).NADH acts as an electron carrier, transferring electrons to the electron transport chain (ETC).Oxygen is the final electron acceptor of the electron transport chain (ETC).Glucose enters the Krebs cycle during oxidative phosphorylation.
Question
Which statements are correct about how chemoheterotrophic aerobes produce their ATP?SELECT ALL THAT APPLYLactic acid is the first product of the glycolytic pathway.Photosynthesis is used to produce glucose, which is then broken down during glycolysis.H2S is the final electron acceptor of the electron transport chain (ETC).NADH acts as an electron carrier, transferring electrons to the electron transport chain (ETC).Oxygen is the final electron acceptor of the electron transport chain (ETC).Glucose enters the Krebs cycle during oxidative phosphorylation.
Solution
The correct statements about how chemoheterotrophic aerobes produce their ATP are:
- NADH acts as an electron carrier, transferring electrons to the electron transport chain (ETC).
- Oxygen is the final electron acceptor of the electron transport chain (ETC).
The other statements are incorrect because:
- Lactic acid is not the first product of the glycolytic pathway, it is a product of fermentation when there is no oxygen present.
- Photosynthesis is not used by chemoheterotrophs to produce glucose. They obtain their energy by consuming organic molecules produced by other organisms.
- H2S is not the final electron acceptor of the ETC in chemoheterotrophic aerobes. In these organisms, oxygen is the final electron acceptor.
- Glucose does not enter the Krebs cycle during oxidative phosphorylation. It is first broken down during glycolysis and then the resulting pyruvate enters the Krebs cycle.
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