electron carrier
Cellular energy transporter
An electron carrier is a molecule that accepts and donates electrons during cellular respiration and photosynthesis, shuttling them between reactions in metabolic pathways.
NAD+ and FAD are common electron carriers, picking up electrons from one molecule and delivering them to another: The electron carrier transfers high-energy electrons to the electron transport chain.
Enzyme's nonprotein helper molecule
- redox reactionPaired electron transfer process
- cofactorEnzyme-activating compound
- nicotinamideAmide form of B3
- hemeIron-porphyrin complex in blood
Electron-carrying coenzyme
- coenzyme Q10Cellular energy-production molecule
- iron-sulfur clusterInorganic prosthetic group in proteins
- mitochondriaCell's energy-producing organelles
- inner membraneInnermost surrounding tissue layer
Light-harvesting complex splitting water
- chloroplastLight-harvesting cell structure
- water splittingDecomposing H2O into elements
- stromaSupportive tissue framework
coenzyme
Enzyme's nonprotein helper molecule
- redox reactionPaired electron transfer process
- cofactorEnzyme-activating compound
- nicotinamideAmide form of B3
heme · quinone · half-reaction · electrochemistry · bioenergetics
NADH
Electron-carrying coenzyme
- coenzyme Q10Cellular energy-production molecule
- iron-sulfur clusterInorganic prosthetic group in proteins
- mitochondriaCell's energy-producing organelles
photosystem II
Light-harvesting complex splitting water
- chloroplastLight-harvesting cell structure
- water splittingDecomposing H2O into elements
- stromaSupportive tissue framework
- NADNADH, nicotinamide, adenine
- photosynthesisphotosynthesis, chlorophyll, chloroplast, chloroplasts, PSI
- flavinsriboflavin, FAD, vitamin B2
- Microbial metabolismaerobic respiration, anaerobic respiration, fermentation, glycolysis, citric acid cycle
electron carrieroxygen
Element eight, colorless gas
electron acceptor · oxidizing agent · oxidant · reducing agent