Cellular respiration, metabolic cycles

Référence de la vidéo 11937607
Cellular respiration, metabolic cycles. Animation showing a general view of oxidative metabolism in cellular respiration. The animation successively shows the reaction routes by which sugars, proteins and fats are metabolised. The first sequence shows sugars (centre left), with polysaccharides broken down to monosaccharides, and glucose metabolised via glycolysis to pyruvate. The action of ATP (adenosine triphosphate) and the reducing power of reduced nicotinamide adenine dinucleotide (NADH) is shown. The further metabolism of pyruvate produces acetyl-coenzyme A (acetyl-CoA). This stage, and the citric acid cycle, is common to all three metabolic cycles, with CO2 (carbon dioxide) as a waste product. In a further stage, oxidative phosphorylation (centre right) regenerates ATP and electrons are transferred to oxygen (O2) to produce water (H2O). The animation then shows proteins (lower left) broken down into amino acids that contribute to these metabolic cycles, with ammonia (NH3) as a waste product. The final sequence shows fats (upper left) broken down into fatty acids and glycerol, contributing acetyl-CoA. For this animation with labels, see K004/3514.
Licence : Droits gérés
Crédit : Science Photo Library / Biocosmos / Francis Leroy & Edwin Vandermeeren
Model Release : Non requis
Durée : 60 Secondes
Aspect ratio : 16/9
Restrictions : -

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