Full formScience
FADH2stands forReduced flavin adenine dinucleotide
Full Form of FADH2
What is FADH2?
FADH2 is a reduced form of flavin adenine dinucleotide, a redox cofactor involved in important metabolic reactions in living organisms. It acts as an electron carrier, particularly in cellular respiration and oxidative phosphorylation. In the Krebs cycle (citric acid cycle), FADH2 is produced when succinate is converted to fumarate, catalyzed by succinate dehydrogenase. Later, in the electron transport chain inside mitochondria, FADH2 donates its electrons to Complex II, leading to the production of ATP through chemiosmosis. One molecule of FADH2 yields about 1.5 ATP molecules, compared to 2.5 ATP from NADH. In the Indian context, FADH2 is a key topic in Class 11 and 12 NCERT Biology textbooks, especially in chapters on respiration in plants and human physiology. It is frequently asked in competitive exams like NEET, AIIMS, and CBSE board exams. Understanding FADH2’s role in energy metabolism helps students grasp how cells generate usable energy from glucose and fatty acids. The molecule is also relevant in biochemistry research and medical studies, where defects in its function can lead to metabolic disorders.
FADH2 का फुल फॉर्म
फ्लेविन एडेनिन डाइन्यूक्लियोटाइड (अपचयित)
Example
In the Krebs cycle, each turn generates one molecule of FADH2, which later enters the electron transport chain to synthesize ATP.
FADH2 — frequently asked questions
What is the full form of FADH2?
The full form of FADH2 is Reduced flavin adenine dinucleotide. It is the reduced form of FAD, carrying two high-energy electrons.
How many ATP does FADH2 produce in cellular respiration?
Each molecule of FADH2 produces about 1.5 ATP molecules in the electron transport chain, compared to 2.5 ATP from NADH.
Is FADH2 important for NEET and Indian board exams?
Yes, FADH2 is a crucial topic in Class 11 and 12 Biology for NEET, AIIMS, and CBSE exams. Questions often cover its production in the Krebs cycle and its role in oxidative phosphorylation.