Question

Which statement about Q cycle is FALSE? In the second half of the cycle, a second QH2 gives up its protons to Complex III, one to a second molecule of cytochrome c, and the other to reduce Q. to QHz. The Q cycle takes place in Complex III. The newly formed Q dissociates and enters the Q pool. In the first half of the cycle, one of two electrons of a bound QH? Is transferred to cytochrome cand the other to a bound Q. formin.he semiquinone radical anion Q.. The removal of two protons from the matrix contributes to the formation of the proton gradient.

Answer 1

Answer Statement est is false Second explovn In the one to a 1st second half of que 14 He also gives up in electron to compless o mollular of cyrenome & and the other to ereduce a to one But in the give ou also gives up in proton to complex II toring & tatement- The and electron transfer ensults in an uptance of two prstone option this is 1 e from the massix. 1 си, ubiquinol, ubisensiquinone, - so - ubiquinine. & wele given by Peter mitchello zut се на. e fe- scate Quz op site e bL 09 e co pool) BM 0 .br - Hign affining 012 On sik L Low second half of a cycle Matrix (N-fall) 27

A second ubiquinol molecule is creiaised for this purpose and exeleased to the p-face the ubiquinol, at the op above the site fellows - an he process a described second election formed complete the reduction of ubi remiquinone to ubiquinol taken from the matrix Two plotons - then I gou boets to the pool and Q-04cle is compleeteel" Hette 02 10 ubiquino! Basic semiquinone ubiquinone 2012 cute cyta e fes Би 2 cous of four & The path of e through complex I Two moluules q amare mujalsed to ce and ecelease a total Two of the elections are to ans posted via. fe-s centre peotes and custochrome a directly to cyrochoune The with other two electrons more through cytochrome be and by and reduce an suidized a to ouzi (