CHM362H5 Lecture Notes - Lecture 17: Metabolic Pathway, Royal Aircraft Factory F.E.2, Glycolysis
Document Summary
Metabolism overview: different cells and organism posses alternative pathways. Autotrophs can use co2 as sole c source. Heterotrophs need organic form of c (i. e. glucose) to synthesize other essential c compounds. Phototrophs photosynthetic organisms; use light as energy source. Chemotrophs use organic (i. e. glucose) as energy source. Or use inorganic compounds (i. e. fe2+, no2. Reduced form of o2: o2 is essential for life of obligate aerobes. Adapt to anaerobic conditions by substituting other electron acceptors for o2. I. e. e. coli: obligate anaerobes can not use o2 at all and are poisoned by it. Figure 17-6 (modified) p558: catabolism and anabolism occur simultaneously in cells, catabolism and anabolism are tightly controlled and may be in separate organelles i. e. fatty acid oxidation and fatty acid biosynthesis. Nad+ in catabolism: proteins, carbohydrates, lipids are highly reduced compounds. Excellent energy sources and good substrates for catabolism.
