Cytochrome P450 Electron Sources (P450 Reductase or Adrenodoxin)
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Science, Biology, Chemistry, Physics
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University
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Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary source of electrons for the cytochrome P-450 electron transport chain?
FMN
NADPH
FADH2
ATP
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the mitochondrial system, which enzyme transfers electrons from FAD to adrena doxin?
FMN reductase
NADPH oxidase
Adrena doxin reductase
Cytochrome P-450 reductase
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of adrena doxin in the mitochondrial electron transport chain?
It oxidizes molecular oxygen.
It transfers electrons to the heme iron of P-450.
It synthesizes ATP.
It acts as a coenzyme for NADPH.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which flavin is involved in the electron transfer process in the smooth endoplasmic reticulum?
FAD
FMN
Coenzyme Q
NADH
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the smooth endoplasmic reticulum, what is the sequence of electron flow?
NADPH -> FMN -> FAD -> Heme iron
NADPH -> FAD -> Heme iron -> FMN
NADPH -> FAD -> FMN -> Heme iron
NADPH -> Heme iron -> FAD -> FMN
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which system is used by the cholesterol side chain cleavage enzyme?
Peroxisomal system
Cytosolic system
Mitochondrial system
Microsomal system
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main difference between the mitochondrial and microsomal P-450 systems?
The source of electrons
The location of the P-450 enzyme
The type of heme iron used
The auxiliary enzymes involved
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