The Q cycle is a mechanism in the electron transport chain’s complex III (cytochrome bc1 complex) that transfers electrons from ubiquinol (QH2) to cytochrome c. It involves proton pumping from the mitochondrial matrix to the intermembrane space, contributing to the proton gradient for ATP synthesis. This is an MCQ on […]
Reduced coenzymes, such as NADH and FADH2, are molecules that carry electrons and hydrogen ions during cellular respiration. They are formed when NAD+ and FAD gain electrons (are reduced) during metabolic reactions like glycolysis and the Krebs cycle, facilitating ATP production in the electron transport chain. This is an MCQ […]
The link reaction, or pyruvate decarboxylation, is the process where pyruvate from glycolysis is converted into acetyl-CoA in the mitochondria. Pyruvate loses a carbon dioxide molecule, and NAD+ is reduced to NADH. This reaction connects glycolysis to the Krebs cycle. This is an MCQ on Link Reaction of Respiration or […]
The electron transport system (ETS) is a series of protein complexes and electron carriers in the inner mitochondrial membrane that transfer electrons from NADH and FADH2 to oxygen, producing water. This process generates a proton gradient that drives ATP synthesis through oxidative phosphorylation. This is an MCQ on Electron Transport […]
The CAM (Crassulacean Acid Metabolism) cycle is a photosynthetic adaptation in some plants allowing them to fix CO₂ at night, storing it as malic acid. During the day, CO₂ is released for photosynthesis. This conserves water, making it ideal for arid environments. This is an MCQ on CAM Cycle with […]