BIOL130 Lecture Notes - Lecture 3: Nicotinamide Adenine Dinucleotide Phosphate, Exergonic Reaction, Acetyl-Coa

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Cellular respiration: how do cells obtain energy from food, cells require energy, obtained from chemical bond e(cid:374)erg(cid:455) stored i(cid:374) (cid:858)food(cid:859, most important source is carbohydrate (sugar) Sugars oxidized to co2 and h2o: energy stored/transported in high energy bonds of activated carrier molecules (e. g. atp and nadh) Energy generated from oxidation of food molecules needs to be stored until needed as activated carrier molecules. These contain one or more high energy content bonds. Transport and storage capacity: goal is the same repository for high energy that is moved throughout the cell and used for other chemical reactions. Can cycle b/w a high and low energy state. 3 types of activated co-enzymes: nad+ (nadh) = nicotinamide adenine dinucleotide (vitamin b3, nadp+(nadph) = nicotinamide adenine dinucleotide phosphate. B2: nad(p, nicotinamide ring functional end of molec where, atp equivalent - hydride ion added (reduced) added electrons high energy. Low energy from when molec loose hydride (oxidized: atp phosphate.

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