The glycogen branching enzyme catalyzes: the cleavage of (al rightarrow 4) glyco

Question

The glycogen branching enzyme catalyzes: the cleavage of (al rightarrow 4) glycosidic bonds in during glycogen breakdown. the formation of (al rightarrow 4) glycosidic bonds during glycogen synthesis. the formation of (al rightarrow 6) glycosidic bonds during glycogen synthesis. glycogen breakdown at branch points. the removal of unneeded glucose units at branch points. The inhibitor, antimycin, binds and blocks electron transport at Complex III of the electron transport chain (ETC). What are the consequences on electron transport when this inhibitor is introduced into cells? NADH-linked oxidation only would be inhibited FADH2-linked oxidation only would be inhibited NADH-linked and FADH2-linked oxidation would be inhibited Electron transport coupled proton pumping would be unaffected

Explanation / Answer

Que 25

The phosphorylase, is responsible for breaking of 4 glucose units and cannot do any further more. Now the glycogen debranching enzyme is responsible for the exposing of -1,6 glycosidic linkage and breakage of the remaining alpha-1,6 linkage. Therefor option d is correct.

Que 26

The antimycin is responsible for the inhibition of oxidative phosphorylation by the binding to Qi site of Cytochrome C reductase, which is generated by the oxidation NADH. Thus, the option “A’ is correct.

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