Study Set Content:
The electron transport chain is a series of four protein complexes that couple
redox reactions,
The electron transport chain is a series of four protein complexes that couple redox reactions, creating an
electrochemical gradient
he electron transport chain is a series of four protein complexes that couple redox reactions, creating an electrochemical gradient that leads to the creation of
ATP
The electron transport chain is a series of four protein complexes that couple redox reactions, creating an electrochemical gradient that leads to the creation of ATP in a complete system named
oxidative phosphorylation.
The ETC proteins in a general order are
complex I, complex II, coenzyme Q, complex III, cytochrome C, and complex IV.
Complex I, also known as
ubiquinone oxidoreductase
Complex I, also known as ubiquinone oxidoreductase, is made up of
NADH dehydrogenase, flavin mononucleotide (FMN), and eight iron-sulfur (Fe-S) clusters
The NADH donated from glycolysis, and the citric acid cycle is
oxidized
Complex I, also known as ubiquinone oxidoreductase, is made up of NADH dehydrogenase, flavin mononucleotide (FMN), and eight iron-sulfur (Fe-S) clusters. The NADH donated from glycolysis, and the citric acid cycle is oxidized here, transferring (blank) electrons
2
• Complex I, also known as ubiquinone oxidoreductase, is made up of NADH dehydrogenase, flavin mononucleotide (FMN), and eight iron-sulfur (Fe-S) clusters. The NADH donated from glycolysis, and the citric acid cycle is oxidized here, transferring 2 electrons from
NADH to FMN
hen they are transferred to the
Fe-S clusters
hen they are transferred to the Fe-S clusters and finally from Fe-S to
coenzyme Q.
During this process, (blank) pass from the mitochondrial matrix to the intermembrane space
4 hydrogen ions
During this process, 4 hydrogen ions pass from the mitochondrial matrix to the intermembrane space, contributing to the
electrochemical gradient.
•Complex II, also known as
succinate dehydrogenase
•Complex II, also known as succinate dehydrogenase, accepts
electrons
Complex II, also known as succinate dehydrogenase, accepts electrons from
succinate
Complex II, also known as succinate dehydrogenase, accepts electrons from succinate (an intermediate in the citric acid cycle) and acts as a
second entry point
When succinate (blank) to fumarate
oxidizes
When succinate oxidizes to fumarate, (blank) electrons are accepted
2
