Final answer:
The correct flow of electrons in aerobic respiration is 'Glucose → Glycolysis → Krebs cycle → Electron transport chain', which leads to ATP production through oxidative phosphorylation with oxygen as the final electron acceptor. The correct answer is a) Glucose → Glycolysis → Krebs cycle → Electron transport chain.
Step-by-step explanation:
During aerobic respiration, the correct model for the flow of electrons through cellular respiration is: Glucose → Glycolysis → Krebs cycle → Electron transport chain. This sequence reflects the entire process of breaking down glucose to produce ATP. Initially, glucose undergoes glycolysis to form pyruvate, which is then converted to acetyl-CoA. Acetyl-CoA enters the Krebs cycle (also known as the citric acid cycle) in the mitochondria, leading to the production of NADH and FADH2.
These electron carriers donate electrons to the electron transport chain, which pumps protons across the mitochondrial membrane to establish a proton gradient. This proton motive force then drives the synthesis of ATP through oxidative phosphorylation, and oxygen is the final electron acceptor, resulting in the production of water.