01:377:370 Lecture 12: Energy Transfer in the Body
10 Feb 2019
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Powers all of cells energy requiring processes. Energy is stored in bonds of atp, there is a limited store of this however. Adp forms when atp joins with water. If another phosphate group is cleaved its mono. Glandular secretion, digestion, circulation, muscle action, nerve transmission. Pcr hydrolyzed by the enzyme, creatine kinase (ck) High levels of adp favor this reaction. Reaches max energy yield in about 10 seconds. Creatine may be phosphorylated ack to pcr. Cells store ~4-6 times more pcr than atp. Adenylate kinase reaction can also assist in atp regeneration; 2adp -------- If you have a lot of adp it shows you"re working out and need more atp. Pcr hydrolysis and adenylate kinase reaction generate: Nad+ and fad serve as major electron acceptors in cellular respiration. This is our intermediate energy system; anaerobic. Crucial during physical activities that require maximal effort for up to 90 seconds. Limited quantities of atp are generated via substrate-level phosphorylation (no oxygen)
