Concept explainers
Indicate whether each of the following changes represents oxidation or reduction.
- a. FADH2 → FAD
- b. FMN → FMNH2
- c. Fe(III)SP → Fe(II)SP
- d. Cyt c1 (Fe3+) → cyt c1 (Fe2+)
(a)
Interpretation:
Whether the change
Concept Introduction:
Electron transport chain is a sequence of biochemical reactions in which electrons and hydrogen atoms from the citric acid cycle are transferred to various intermediate carriers and finally reacts with molecular oxygen to form a water molecule.
There are four complexes associated with the electron transport chain that is present in the inner mitochondrial membrane. The four complexes that help in the electron transfer in the electron transport chain are:
Complex I:
Complex II:
Complex III:
Complex IV:
An overview of the electron transport chain is as follows:
Redox reactions involve oxidation and reduction reaction occurring simultaneously so that one species is oxidized and the other one is reduced. The species that gain hydrogen or electron is known as reduced form and the species that loss hydrogen or electron is known as oxidized form. The general representation of the redox reaction is,
Here, A is oxidized form and AH is reduced form.
Answer to Problem 12.90EP
The change
Explanation of Solution
In the complex II, electrons are transferred from the
Here,
(b)
Interpretation:
Whether the change
Concept Introduction:
Electron transport chain is a sequence of biochemical reactions in which electrons and hydrogen atoms from the citric acid cycle are transferred to various intermediate carriers and finally reacts with molecular oxygen to form a water molecule.
There are four complexes associated with the electron transport chain that is present in the inner mitochondrial membrane. The four complexes that help in the electron transfer in the electron transport chain are:
Complex I:
Complex II:
Complex III:
Complex IV:
An overview of the electron transport chain is as follows:
Redox reactions involve oxidation and reduction reaction occurring simultaneously so that one species is oxidized and the other one is reduced. The species that gain hydrogen or electron is known as reduced form and the species that loss hydrogen or electron is known as oxidized form. The general representation of redox reaction is,
Here, A is oxidized form and AH is reduced form.
Answer to Problem 12.90EP
The change
Explanation of Solution
Flavin mononucleotide is the structural component of the complex I of the electron transport chain. Flavin mononucleotide exists in two forms: FMN (oxidized form) and
Here, FMN gains electrons and hydrogen and leads to the formation of
(c)
Interpretation:
Whether the change
Concept Introduction:
Electron transport chain is a sequence of biochemical reactions in which electrons and hydrogen atoms from the citric acid cycle are transferred to various intermediate carriers and finally reacts with molecular oxygen to form a water molecule.
There are four complexes associated with the electron transport chain that is present in the inner mitochondrial membrane. The four complexes that help in the electron transfer in the electron transport chain are:
Complex I:
Complex II:
Complex III:
Complex IV:
An overview of the electron transport chain is as follows:
Redox reactions involve oxidation and reduction reaction occurring simultaneously so that one species is oxidized and the other one is reduced. The species that gain hydrogen or electron is known as reduced form and the species that loss hydrogen or electron is known as oxidized form. The general representation of redox reaction is,
Here, A is oxidized form and AH is reduced form.
Answer to Problem 12.90EP
The change
Explanation of Solution
Iron-sulfur proteins
(d)
Interpretation:
To indicate whether the change
Concept Introduction:
Electron transport chain is a sequence of biochemical reactions in which electrons and hydrogen atoms from the citric acid cycle are transferred to various intermediate carriers and finally reacts with molecular oxygen to form a water molecule.
There are four complexes associated with the electron transport chain that is present in the inner mitochondrial membrane. The four complexes that help in the electron transfer in the electron transport chain are:
Complex I:
Complex II:
Complex III:
Complex IV:
An overview of the electron transport chain is as follows:
Redox reactions involve oxidation and reduction reaction occurring simultaneously so that one species is oxidized and the other one is reduced. The species that gain hydrogen or electron is known as reduced form and the species that loss hydrogen or electron is known as oxidized form. The general representation of redox reaction is,
Here, A is oxidized form and AH is reduced form.
Answer to Problem 12.90EP
The change
Explanation of Solution
Cytochromes are a structural component of the complex III and consist of iron that changes its oxidation state from
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