Cellular Energy Production and Metabolism Quiz

Mitochondrion is the powerhouse of the cell where ATP is produced through oxidative phosphorylation.

Glycolysis is the initial stage of cellular respiration, producing ATP through the breakdown of glucose.

Glycolysis is a common metabolic pathway in both cellular respiration and fermentation, breaking down glucose into pyruvate.

Substrate-level phosphorylation occurs in glycolysis, directly transferring a phosphate group to ADP to form ATP.

Glucose is ultimately converted into pyruvate during the glycolytic pathway.

The citric acid cycle occurs in the mitochondrial matrix, generating NADH and FADH2 for the electron transport chain.

One round of cellular respiration produces a net gain of 36 ATP molecules from a single glucose molecule.

The electron transport chain generates a proton gradient, driving ATP synthesis during oxidative phosphorylation.

Phosphofructokinase-1 catalyzes the rate-limiting step in glycolysis, regulating the overall process.

ATP is consumed in the phosphorylation of fructose-6-phosphate by phosphofructokinase-1 during glycolysis.

The Calvin cycle fixes carbon dioxide into organic compounds, supporting the synthesis of glucose and other carbohydrates.

NADP+ is reduced to NADPH during the light-dependent reactions, storing energy for the Calvin cycle.

Oxidative phosphorylation takes place on the inner mitochondrial membrane, utilizing the proton gradient for ATP synthesis.

Coenzyme Q transfers electrons between complexes in the electron transport chain, facilitating ATP production.

Carbon dioxide is generated in the citric acid cycle as a byproduct of the oxidative decarboxylation of organic acids.

Oxygen serves as the final electron acceptor in the electron transport chain, forming water.

ATP synthase utilizes the proton gradient to phosphorylate ADP, producing ATP in oxidative phosphorylation.