BIOL130 Lecture Notes - Lecture 5: Nucleoside Triphosphate, Catabolism, Hydrolysis
10 Dec 2016
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Bond type depends how much energy they carry. Food molecules- break them down through exergonic reactions and get energy. When we carry out pathways on the left hand size (catabolic- break through exergonic) and liberate energy, want to take the molecules and load them with energy to now drive anabolic reactions. Need these activated molecules to be the intermediate storage system so we can harvest the energy, transport, or use them at a later date. Nucleic acids- need hydrolysis of nucleoside triphosphate to link nucleotides together. Since need high energy (break of two phosphates) Three activated carrier molecules- atp, nadh/nadph/nadp, acetyl coa. Redo(cid:454) (cid:271)(cid:455) (cid:373)ovi(cid:374)g ele(cid:272)tro(cid:374)s (cid:894)protei(cid:374)s (cid:272)a(cid:374) t do this(cid:895) Reduced form higher state picking up high energy electrons, oxidized form lower energy state. Have to have paired redox reactions since we have to move electrons. Glucose catabolism- do it in very small steps instead of a single step, allows us to store free energy in activated carrier molecules.
