Biochemistry - Mock Test 1

Question 1

The acyl-CoA formed in the cytosol is transported to the ___ for oxidation using a shuttle involving the intermediate formation of acyl- _____

A) mitochondrial matrix, carnitine B) mitochondrial matrix, coenzyme A C) endoplasmic reticulum, albumin D) endoplasmic reticulum, carnitine

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Question 2

The superoxide free radical induced oxygen toxicity is prevented by

A) Superoxide dismutase B) Oxygenase C) Hydroperoxidase D) Hydrolase

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Question 3

The free radical effects are prevented by

A) Hydrolases B) Hydroperoxidases C) Oxidases D) Oxygenases

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Question 4

Hydroxylation of drugs is mediated by

A) Hydrolases B) Hydroperoxidases C) Oxidases D) Oxygenases

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Question 5

Biochemical oxidation is always accompanied by

A) Oxidation of an electron receptor B) Reduction of an electron receptor C) Oxidation of an electron acceptor D) Reduction of an electron acceptor

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Question 6

The intermediary carrier of electrons between acyl-CoA dehydrogenase and the respiratory chain is

A) Succinate dehydrogenase B) NADH dehydrogenase C) Xanthine oxidase D) Electron-transferring flavoprotein

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Question 7

The flavanoprotein enzyme which converts purine bases to uric acid is

A) Xanthine oxidase B) Aldehyde dehydrogenase C) L-amino acid oxidase D) Cytochrome oxidase

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Question 8

The redox potential of ubiquinone;ox/red system is

A) -0.29 B) -0.42 C) 0.1 D) 0.29

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Question 9

The redox potential of fumarate/succinate system is

A) -0.29 B) -0.42 C) 0.22 D) 0.03

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Question 10

The redox potential of oxaloacetate/malate system is

A) -0.42 B) -0.17 C) 0.22 D) 0.82

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