Molecules involved in the conversion of oxidized protein to their functional reduced suylfhydryl form include all of the following except
D) Thioredoxin reductase
E) None of the above are correct
All of the following are components of the electron transport chain except ______.
A) Coenzyme Q
B) Succinate dehydrogenase
C) Coenzyme A
D) Cytochrome C
E) NADH dehydrogenae
The ETC component that transfers electrons directly to oxygen is __________.
During the oxidation of NADH there are several steps in which ∆Eo’ is sufficient for ATP synthesis. These occur within
Complexes I, III and IV
Which of the following molecules inhibits Complex I of the electron transport chain?
ATP synthesis and mitochondrial electron transport are coupled by
Protonmotive force & Proton gradient
Evidence supporting the chemiosmotic theory inculdes all of the following except
The pH of a weakly buffered suspension of mitochondria rises when O2 added.
Examples of uncouplers include ________.
DNP & Gramicidin
In the ATP Synthase the Fo factor
Has three types of subunits & In a transmembrane proton channel
The maximum P/O ration of FADH2 is
The control of aerobic respiration by _________ is referred to as respiratory control.
The first ROS formed during the reduction of oxygen is ________.
The reaction of Fe+2 with H2O2 results in the production of
Hydroxyl radical & Hydroxide ion
ROS are generated during
Xenobiotic metabolism, Respiratory burst, & Ionizing radiation
Converts organic peroxides into alcohols & Reduces H2O2 into H2O
The NADPH required for the generation of GSH from GSSG in synthesized by the reactions of
The pentose phosphate pathway
Glutathione peroxidase requires _____ for full activity
Examples of antioxidants include all of the following except _________
One of the mechanisms by which vitamin C protects membrane is by
Regenerating reduced α-tocopherol & Reacting with peroxyl radicals
The ultimate electron acceptor of the mitochondrial electron transport system is
O2 & H2O
In Complex I of the ETC, the major sources of NADH include
Fatty acid oxidation & The citric acid cycle
In Complex III, electrons are tranferred from UQH2 to
___________ is a metal cofactor of the cytochromes.
Carbon monoxide inhibits which of the following?
Which of the following is the best reducing agent?
The final product of oxidative phosphorylation is ________.
_____________ are hydrophobic molecules that dissipate ionic gradients.
The return of ______ into the mitochondrion is coupled to the formation of ______.
The energy that is captured by the electron transport system is in the form of
NADH & FADH2
Reducing power generated in the cytoplasm can be transferred into the mitochondrion by which of the following processes?
Glycerol phosphate shuttle & Malate-aspartate shuttle