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Biochemistry: Module 2 > Biologic Oxidation > Flashcards

Biologic Oxidation Flashcards

1
Q

Gain of electron

A

Reduction

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2
Q

The process by which cells derive energy in the form of ATP from controlled reaction of hydrogen with oxygen from water

A

Respiration

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3
Q

Removal of electron

A

Oxidation

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4
Q

Redox potential is normally expressed at pH ____, at which pH the electrode potential of the hydrogen electrode is _____

A

7.0 , -0.42

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5
Q

It allows at prediction of the direction of flow of electron

A

Redox system

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6
Q

Enzymes involved in oxidation and reduction

A

Oxidoreductase

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7
Q

It catalyze the removal of hydrogen from a substrate using oxygen as hydrogen acceptor

A

Oxidases

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8
Q

Oxydases form ___ or ____ as reaction product

A

Water or hydrogen peroxide

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9
Q

It is a hemeprotein having the typical heme prosthetic group myoglobin and hemoglobin

A

Cytochrome oxidase

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10
Q

Action of oxydase is blocked by

A

Carbon monoxide, cyanide, and hydrogen sulfide

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11
Q

Cause of cellular respiration poisoning

A

Carbon monoxide, cyanide and hydrogen sulfide

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12
Q

Cytochrome oxidase contains ____ molecules of heme, each having one ____ atom, that oscillates between ____ and ____ during oxidation and reduction.

A

2, Fe, Ferric, Ferous

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13
Q

Types of oxidases

A

Cytochrome oxidase and flavoprotein

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14
Q

Flavoprotein enzymes contain

A

Flavin mononucleotide or flavin adenine dinucleotide

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15
Q

FMN and FAD are formed in the body from the vitamin

A

Riboflavin

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16
Q

Types of flavoprotein that contains one or more metal as essential factor

A

Metalloflavoproteins

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17
Q

An FMN linked enzyme found in the kidney

A

L amino acid oxidase

18
Q

It contains molybdenum and plays an important role in the conversion of purine bases to uric acid

A

Xanthine oxidase

19
Q

FAD linked enzyme present in the mammalian liver

A

Aldehyde dehydrogenase

20
Q

It contains molybdenum and non heme iron and acts upon aldehydes and N-heterolytic substrates

A

Aldehyde dehydrogenase

21
Q

Enzymes used by dehydrogenase

A

Nicotinamide adenine dinucleotide

Nicotinamide adenine dinucleotide phosphate

22
Q

The proteins of dehydrogenase are formed in the body from vitamin

A

Niacin

23
Q

It catalyze oxidoreduction reaction in the oxidative pathways of metabolism

A

NAD linked dehydrogenase

24
Q

It is concerned in the electron transport in the respiratory chain

A

Riboflavin linked dehydrogenase

25
Q

Proteins that are tightly bind to their apoenzymes than are the nicotinamide coenzymes

A

Riboflavin linked dehydrogenase

26
Q

Acts as a carrier of electron between NADH and the components of higher redox potential

A

NADH dehydrogenase

27
Q

Dehydrogenase that transfer reducing equivalent directly from substrate to the respiratory chain

A

Succinate dehydrogenase
Acyl coa dehydrogenase
Mitochondrial 3 phosphate dehydrogenase

28
Q

Its is an intermediarry carrier of electron between acyl coa dehydrogenase and the respiratory chain

A

Electron transferring flavoprotein

29
Q

Iron containing hemo protein

A

Cytochromes

30
Q

In the respiratory chain, they are involved as carrier of electron from flavoprotein and cytochrome oxydase

A

Cytochrome

31
Q

They protect the body agains harmful peroxide

A

Hydroperoxidase

32
Q

Accumulation of peroxide can lead to generation of free radicals which can…

A

Disrupt membrane and cause cancer and artherosclerosis

33
Q

They are found in milk and in leukocytes, playelets and other tissues involved in eicosanoid metabolism

A

Peroxidase

34
Q

______ is reduced at the expense of several substance that will act as an electron acceptor

A

Hydrogen peroxide

35
Q

It catalyzes the destruction of H2O2 and lipid hydroperoxide

A

Glutathione peroxidase containing selenium

36
Q

Heme protein containing 4 heme groups

A

Catalase

37
Q

It is found in the blood, bone marrow, mucous membranes kidney and liver

A

Catalase

38
Q

It functions to destroy hydrogen peroxide formed by the action of oxidase

A

Catalase

39
Q

Rich in oxidase and catalase

A

Peroxisomes

40
Q

It is concerned with the synthesis or degradation of many different metabolites

A

Oxygenase

41
Q

They catalyze the incorporation of oxygen to the substrate

A

Oxygenase

Biochemistry: Module 2 (5 decks)

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