How well do you understand chemical processes occurring in living matter? Test your knowledge of biochemistry with these questions and answers.
A person with phenylketonuria will convert
phenylalanine to phenylpyruvate
phenylalanine to isoleucine
phenylpyruvate to phenylalanine
tyrosine to phenylalanine
Correct answer is A
No explanation has been provided for this answer.
Transaminase enzymes are present in
liver
pancreas
intestine
none of these
Correct answer is A
No explanation has been provided for this answer.
Tyrosine is degraded to acetoacetyl CoA and fumarate and is described as a
glucogenic amino acid
ketogenic amino acid
ketogenic and glucogenic amino acid
keto-gluco amino acid
Correct answer is C
No explanation has been provided for this answer.
A person with phenylketonuria is advised not to consume which of the following products?
Glycine containing foods
Fat containing food
Glucose
Aspartame
Correct answer is D
No explanation has been provided for this answer.
Transamination is the process where
carboxyl group is transferred from amino acid
α-amino group is removed from the amino acid
polymerisation of amino acid takes place
none of the above
Correct answer is B
No explanation has been provided for this answer.
An example of a transamination process is
glutamate = hexanoic acid + NH3
aspartate + hexanoic acid = glutamate + oxaloacetate
aspartate + α ketoglutarate = glutamate + oxaloacetate
glutamate = α-ketoglutarate + NH3
Correct answer is C
No explanation has been provided for this answer.
Oxidative deamination is the conversion of an amino
group from an amino acid to a keto acid
acid to a carboxylic acid plus ammonia
acid to a keto acid plus ammonia
group from an amino acid to a carboxylic acid
Correct answer is C
No explanation has been provided for this answer.
A person with phenylketonuria cannot convert
phenylalanine to tyrosine
phenylalanine to isoleucine
phenol into ketones
phenylalanine to lysine
Correct answer is A
No explanation has been provided for this answer.
Which of the following is the best described glucogenic amino acid?
Lysine
Tryptophan
Valine
None of these
Correct answer is C
No explanation has been provided for this answer.
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