AMINO ACID METABOLISM QUIZ

An example of a transamination process is

glutamate = hexanoic acid + NH3

aspartate + α ketoglutarate = glutamate + oxaloacetate

glutamate = α-ketoglutarate + NH3

aspartate + hexanoic acid = glutamate + oxaloacetate

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Lysine is degraded to acetoacetyl CoA and is described as a

keto-gluco amino acid

ketogenic amino acid

none of these

glucogenic amino acid

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In the normal breakdown of phenylalanine, it is initially degraded to

phenylpuruvate

lysine

fumarate

tyrosine

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A ketogenic amino acid is one which degrades to

multiple intermediates including pyruvate or citric acid cycle intermediates and acetyl CoA or acetoacetyl CoA

keto-sugars

either acetyl CoA or acetoacetyl CoA

pyruvate or citric acid cycle intermediates

TRUE ANSWER : ?
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A glucogenic amino acid is one which is degraded to

None of these

keto-sugars

either acetyl CoA or acetoacetyl CoA

pyruvate or citric acid cycle intermediates

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Oxidative deamination is the conversion of an amino

acid to a carboxylic acid plus ammonia

acid to a keto acid plus ammonia

group from an amino acid to a keto acid

group from an amino acid to a carboxylic acid

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A person with phenylketonuria cannot convert

phenol into ketones

phenylalanine to tyrosine

phenylalanine to lysine

phenylalanine to isoleucine

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A person with phenylketonuria will convert

tyrosine to phenylalanine

phenylalanine to isoleucine

phenylpyruvate to phenylalanine

phenylalanine to phenylpyruvate

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Which of the following is the best described glucogenic amino acid?

None of these

Tryptophan

Lysine

Valine

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The most toxic compounds is

lysine

phenylalanine

tyrosine

phenylpyruvate

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